Efficient Paint Removal Line for UBC Aluminum Cans Recycling

2025-05-16

The UBC Aluminum Cans Paint Removing Line is a specialized system designed to strip surface coatings from used beverage cans (UBCs) before smelting, ensuring high-purity aluminum recovery.

Process Workflow

1．Pre-Shredding: Packed UBCs are torn apart and shredded into small pieces (20-50mm) using a hammer mill, increasing surface area for efficient paint removal.

2．Thermal Decoating: Shredded material enters a continuous decoating furnace, where high temperatures (500-600°C) pyrolyze 99% of paints and coatings without oxidizing the aluminum.

3．Emission Control: Volatile organic compounds (VOCs) are treated via afterburners and scrubbers, meeting environmental standards.

Key Features

1．High Capacity: Models range from 500kg/h to 1500kg/h (e.g., DT-2000 with 61.3KW power).

2．Energy Efficiency: Indirect heating preserves aluminum yield (>97%).

3．Versatility: Also processes e-waste, separating metals from plastics via pyrolysis.

Key Advantages

1．High Efficiency: Removes 99% coatings with continuous operation (500-1500kg/h capacity).

2．Energy Saving: Indirect heating reduces oxidation, preserving 97%+ aluminum yield.

3．Eco-Friendly: Integrated VOC treatment (scrubbers/afterburners) meets emission standards.

4．Cost-Effective: Clean flakes cut smelting costs by reducing slag and flux usage.

5．Durable Design: Alloy-cast parts and premium burners ensure long-term reliability.

6．Versatile: Processes both UBCs and e-waste (metal-plastic separation).

This line combines high efficiency, low operational costs, and eco-friendly design, making it ideal for modern recycling plants.

#Aluminum Cans Paint Removing Line #Aluminum crushing and recycling

Introduction of TEYUN Alligator Shear

2025-05-16

Alligator Shear is named after its structural principle similar to that of an alligator. It is widely used in the cold shearing of waste materials such as round steel, square steel, angle steel, I-beam, plate steel, steel pipe, etc., the shearing of hot-rolled small steel, the shearing of rolled steel sections, and the shearing of waste steel bars, small briquettes, steel plates, and heavy waste of metallurgical furnace materials. In terms of working principle, the hydraulic pump provides pressure to drive the hydraulic cylinder to form a lever pressure, and after pre-pressing and locking, the main pressure cylinder acts on the shear pressure of the moving knife and the moving knife to achieve the cutting operation.

Design and Mechanism

Featuring a hinged jaw design, alligator shears utilize hydraulic systems to generate immense cutting force, often exceeding hundreds of tons. The upper blade, typically crafted from high-carbon steel for durability, pivots to shear metal against a fixed lower plate. Built with heavy-duty frames, these shears withstand repetitive stress, ensuring longevity. Safety enhancements like emergency stops and protective guards prioritize operator security during use.

Applications

Widely used in scrap yards, alligator shears streamline recycling by reducing large metal pieces into compact forms for melting or transport. Construction sites employ them to cut rebar and structural components, while manufacturing plants leverage their precision for material shaping. Their versatility extends to processing diverse shapes—sheets, rods, and bars—enhancing their utility across sectors.

Advantages

Compared to thermal or mechanical cutting methods, alligator shears offer unmatched efficiency and safety. Hydraulic operation minimizes manual labor, enabling high-volume processing with consistent accuracy. Their adaptability accommodates varying material thicknesses, with models ranging from portable units for on-site tasks to stationary machines for industrial settings. Additionally, they reduce waste by producing clean cuts, optimizing material reuse.

Conclusion

Alligator metal shears represent a fusion of power and precision, vital for modern metal processing. By combining robust construction with user-centric safety features, they address the demands of recycling, construction, and manufacturing industries. As sustainability drives scrap metal recycling, these machines play a pivotal role in promoting eco-friendly practices, underscoring their enduring relevance in industrial applications.

#Alligator shear #alligator shearing machine #Alligator scrap metal cutting shear

Introduction to Tire Baler Machines Streamlining Tire Recycling and Waste Management

2025-05-16

In an era where environmental sustainability is paramount, managing tire waste efficiently is a critical challenge. Discarded tires, notorious for their bulk and non-biodegradable nature, pose significant storage and disposal issues. Enter the tire baler machine—a robust solution designed to transform tire handling, recycling, and transportation. This article delves into the workings, benefits, and applications of tire balers, underscoring their role in modern waste management.

What is a Tire Baler Machine?

A tire baler machine is a specialized industrial device that compresses large quantities of tires into compact, manageable bales. By significantly reducing the volume of tires, these machines facilitate easier storage, transportation, and recycling, addressing both economic and environmental concerns.

Key Components

1. Hydraulic System : The powerhouse of the baler, utilizing high-pressure cylinders to compress tires.

2. Compression Chamber : A reinforced space where tires are loaded and compacted.

3. Control Panel : Allows operators to manage the baling process, often featuring programmable settings.

4. Safety Features : Emergency stop buttons, safety guards, and interlocks to protect users.

5. Binding Mechanism: Secures compressed tires with wires, straps, or nets to maintain bale shape.

How Does It Work?

1. Loading : Tires are fed into the compression chamber, either manually or via conveyor systems.

2. Compression : The hydraulic system activates, pressing tires into dense blocks. This can reduce tire volume by up to 80%, turning, for example, 100 loose tires into a 1.5m x 1m bale.

3. Binding: Compressed tires are tightly bound to prevent unraveling.

4. Ejection: The finished bale is discharged for storage or transport.

Applications

- Recycling Facilities: Prepares tires for processing into rubber mulch, asphalt, or playground surfaces.

- Landfills: Minimizes space occupied by tires, extending landfill lifespan.

- Transportation: Lowers shipping costs by optimizing load efficiency.

- Industrial Plants: Manages waste from automotive or manufacturing sectors.

Benefits

- Space Efficiency : Drastically reduces storage footprint.

-Cost Savings : Lowers transportation and disposal expenses.

-Environmental Impact : Supports recycling efforts, reducing reliance on landfills and illegal dumping.

-Safety : Mitigates hazards from loose tires, such as fire risks or pest habitats.

Types of Tire Balers

- Horizontal Balers : Ideal for high-volume processing, offering continuous operation.

- Vertical Balers : Compact and cost-effective for smaller facilities.

- Automation Level: Ranges from manual (labor-intensive) to fully automated systems with integrated sorting and feeding.

Considerations for Adoption

- Capacity Needs: Choose based on tire volume (e.g., passenger tires vs. truck tires).

- Durability: Opt for heavy-duty steel construction to withstand repetitive stress.

- Regulatory Compliance: Ensure adherence to safety (OSHA) and environmental regulations.

Conclusion

Tire baler machines are indispensable in the quest for sustainable waste management. By converting cumbersome tires into neat bales, they enhance operational efficiency, reduce environmental footprints, and unlock recycling potential. As industries and governments prioritize eco-friendly practices, investing in tire balers represents a forward-thinking step toward a greener future. Whether for a recycling plant or a municipal landfill, these machines offer a practical answer to the global tire waste challenge.

#Tire baler #Tire recycling #tire baler machine

Main structure and working principle of TEYUN horizontal baler

2025-05-16

Structural composition:

Compression chamber: A horizontally placed box used to hold waste paper, which is compressed by pushing the pressure head through a hydraulic cylinder.

Hydraulic system: includes oil pumps, oil cylinders, control valves, etc., providing compression power.

Electrical control system: controls compression, bundling, and package delivery processes (manual/automatic mode).

Bundling device: Automatically or manually bundles compressed waste paper blocks (commonly used iron wire or PET strapping).

Packaging mechanism: Some models are equipped with a pushing device to push out the compressed bales.

Workflow:

Fill the waste paper into the compression chamber manually or with a conveyor belt.

The pressure head is pushed horizontally to compress the waste paper to the set density.

After compression, the bundling device fixes the bales.

The bales are pushed out to complete a cycle.

#Horizontal baler #waste cardboard baler #Semi automatic baler machines

Metal Shredder Revolutionizing Scrap Metal Processing

2025-05-16

A metal shredder is a heavy-duty industrial machine that processes and reduces metal waste into smaller pieces. It is essential in the scrap metal recycling industry, breaking down large items like cars, appliances, and machinery into shredded fragments. These fragments are further processed for sorting, separation, and recycling into raw materials for manufacturing.

In operation, the multifunctional shredder reduces material size through shearing, tearing, and squeezing. Its structure typically includes a motor, reducer, rotating blade shaft, H13 blades, spacers, frame, base, box, and work platform. The rotating blade shaft features removable blades and spacers, with the number of blades varying by model and shaft size. The rotary cutting system offers long service life, strong cutting ability, and high production capacity.

The environmental impact of metal shredders is profound. By facilitating efficient metal recycling, these machines significantly reduce the need for virgin ore extraction, conserving natural resources and lowering carbon emissions. Furthermore, the shredded metal output serves as premium feedstock for steel mills and foundries, closing the material loop in industrial production.

From an economic perspective, metal shredders create substantial value by transforming waste into valuable commodities. The processed metal fragments command higher market prices than unprocessed scrap, while the reduced transportation costs associated with compacted materials further enhance profitability.

In short, the metal shredder stands as a cornerstone in modern scrap metal processing, embodying technological innovation and environmental stewardship. and has become an indispensable force in the circular economy.

#Shredder #Metal shredder machine #Metal recycling

Technical features of TEYUN briquetting machine

2025-05-16

1. The system is designed with a pre-unloading device to completely eliminate hydraulic shock.

2. Advanced fast devices ensure the production needs of users.

3. The electrical part adopts an imported PLC fully automatic control system with strong anti-interference ability and low failure rate.

4. The body adopts an integral steel structure with high strength and good stability, and no anchor screws are required.

5. This machine adopts hydraulic transmission, highly professional integral valve block, and ultra-large flow diameter, which reduces system pressure loss and eliminates leakage.

6. The use of cartridge valves, electro-hydraulic proportional valves and unique oil circuit design make the hydraulic system perfect. Even if it works under long-term heavy load, the system will not be unable to do its job.

#Briquetting machine #Metal chip briquette press #metal scrap briquetting press

Teyun gantry shear structure introduction

2025-05-16

Gantry Shear is a large industrial shearing equipment, mainly used in the metal processing industry, for efficient and accurate cutting of metal plates, bars, profiles, etc. Its name comes from its structural design - a frame-type rack similar to a "gantry", which has the characteristics of high stability, strong shearing force, and a wide range of applications. The following is a detailed introduction to the gantry shear

Structure and composition

1.Gantry frame: A rigid frame consisting of two side columns and a top crossbeam ensures the stability of the equipment under high load.

2.Hydraulic system: Provides shearing power, drives the blade through a hydraulic cylinder to complete the cutting, and the shearing force can reach hundreds to thousands of tons.

3.Blade: The upper blade is fixed and the lower blade is movable. The material is mostly high-strength alloy steel and can be replaced to adapt to different materials.

4.Feeding system: Some models are equipped with automatic feeding devices (such as conveyor belts or rollers) to improve efficiency.

5.Control system: PLC or CNC system controls the shearing length, speed and pressure, and supports automated operation.

#Gantry shear #scrap metal cutting machine #hydraulic gantry shear

Changyu's flagship product [Fluorine-lined, corrosion-resistant and wear-resistant mortar pump]

2025-05-16

CHANGYU's flagship product #Fluorine-lined corrosion-resistant and wear-resistant mortar pump : the ultimate anti-corrosion and wear-resistant solution in the chemical industry in the global chemical, metallurgical, environmental protection and other industries, equipment corrosion and wear problems cause economic losses of up to tens of billions of dollars each year. As a leading company in the field of anti-corrosion pumps, Changyu Pumps and Valves has successfully broken the monopoly of international brands with its independently developed fluorine-lined corrosion-resistant and wear-resistant mortar pumps, and has become the preferred solution in the fields of petrochemicals, flue gas desulfurization, and electroplating wastewater treatment.

Fluorine-lined corrosion-resistant and wear-resistant mortar pump

ⅠWhy has the fluorine-lined, #corrosion-resistant and wear-resistant mortar pump become a rigid demand in the industry?

According to Grand View Research, the global chemical pump market will reach $68.5 billion in 2023, of which #corrosion-resistant pumps account for more than 40%, with an annual growth rate of 8.3%. Traditional metal pumps generally have problems of short life and high maintenance costs when facing strong acids (such as sulfuric acid and hydrochloric acid), strong alkalis, and media containing solid particles. For example:

①: A phosphate fertilizer plant used a cast iron pump to transport slurry containing 30% phosphoric acid. The impeller was perforated in just 3 months, and the replacement cost exceeded 120,000 yuan/year;

②: The desulfurization system of a coastal power plant used a #316L stainless steel pump, which frequently shut down due to chloride ion corrosion, affecting power generation efficiency.

ⅡThe core technical advantages of CHANGYU #fluorine-lined pump

①：Quadruple protection technology, lifespan increased by 5-8 times

Lining material: modified #fluorinated ethylene propylene (FEP) material, with a thickness of 8-10mm, a temperature range of -85℃~150℃, and can withstand strong corrosive media such as 98% concentrated sulfuric acid and hydrofluoric acid (key technology for chemical pump selection);

·Wear-resistant structure: The impeller adopts a semi-open design + back auxiliary blades to reduce particle blockage; the surface hardness of the flow-through parts reaches HRC65, which is 3 times more wear-resistant than traditional rubber linings;

·Patented seal: Containerized double-end mechanical seal (API 682 standard), equipped with PLAN54 flushing system, leakage rate <0.1ml/h;

·Modular design: The pump body and bearing bracket are standardized, and the maintenance time is shortened by 70%.

②：Measured performance comparison

Measured performance comparison

Ⅲ Classic application scenarios and customer cases

①：Flue gas desulfurization system (working principle of desulfurization pump)

·Customer: A nickel smelter in Indonesia

·Working conditions: Processing desulfurization slurry containing 15% gypsum, pH=2.5, temperature 80℃

·Solution: Configure #200UHB-ZKD-350-32 fluorine-lined pump, flow rate 350m³/h, head 32m

·Effect: Continuous operation for 18 months without major repairs, energy consumption reduced by 22%, replacing the original American brand pump

②：Electroplating wastewater reuse

·Customer: A circuit board company in Guangdong

·Problem: Chromium-containing wastewater caused corrosion and leakage of 304 stainless steel pump within 3 weeks

·Renovation plan: Use CHANGYU #50UHB-ZKD-20-30 small fluorine-lined pump, equipped with #frequency conversion control

·Results: Wastewater recovery rate increased from 60% to 92%, saving more than 800,000 yuan in annual reagent costs

Ⅳ Selection Guide: How to match the best working conditions?

①: Customers should pay attention to the following when purchasing fluorine-lined pumps:

· Medium characteristics: pH value, temperature, solid content (core parameters for mortar pump selection);

· Flow head: It is recommended to reserve 10%~15% margin (refer to HI 9.6.7 specification);

· Quality certification: ISO or CE quality certification is required;

· Service support: CHANGYU provides free quotation + selection plan + model + structure diagram.

②: As of 2024, Changyu Pumps and Valves has provided more than 120,000 fluorine-lined equipment to the world, thanks to:

· Technical barriers: 17 invention patents, participated in the drafting of the national standard "#Corrosion-resistant Plastic Centrifugal Pump";

· Data verification: (mean time between failures) test up to 28,000 hours;

If you need a customized solution, please contact the CHANGYU engineer team - let corrosion and wear become history, starting with choosing a real ace pump.

#Slurry pump #Corrosion resistant pumps #Wear-resistant pump #Acid pump #Alkali pump #Water treatment pumps

Fluoroplastic centrifugal pumps can easily cope with the problem of caustic soda transportation

2025-05-16

Caustic soda (sodium hydroxide) is an important raw material in the chemical industry, but its strong corrosiveness poses a challenge to transportation equipment. Traditional metal pumps are prone to corrosion and have a short lifespan, while fluoroplastic centrifugal pumps are an ideal solution due to their excellent corrosion resistance and reliability. This article focuses on analyzing their application advantages.

1. Challenges and industry pain points of caustic soda transportation

Caustic soda (sodium hydroxide) is a strong alkaline substance, which is extremely corrosive at a concentration of 30%-50%. According to the National Association of Corrosion Engineers (NACE), in the chemical industry, equipment damage caused by corrosion accounts for about 35% of all equipment failures, of which alkaline medium corrosion accounts for 18%. The service life of traditional 304/316 stainless steel pumps when conveying caustic soda is usually no more than 6 months, while cast iron pumps corrode faster.

Industry pain points are mainly manifested in:

· High costs caused by frequent equipment replacement

· Safety hazards caused by leakage risks

· Loss of production efficiency caused by downtime maintenance

· Medium pollution affects product quality

2. Core advantages and technical analysis of fluoroplastic centrifugal pumps

2.1 Excellent corrosion resistance

a. Fluoroplastic centrifugal pumps use PTFE (polytetrafluoroethylene) or PVDF (polyvinylidene fluoride) as the main material. Experimental data show:

·PTFE material has an annual corrosion rate of <0.01mm under 50% caustic soda concentration and 80℃

·PVDF material has an annual corrosion rate of <0.05mm under 40% caustic soda concentration and 60℃

Compared with stainless steel materials (annual corrosion rate>1mm), the corrosion resistance is improved by more than 100 times

b. Material selection guide:

·Normal temperature (<60℃), medium and low concentration (<30%): PVDF material has a higher cost performance

·High temperature (>60℃), high concentration (>30%): PTFE material is better

·PFA (soluble polytetrafluoroethylene) material can be considered for special working conditions

2.2 Advanced sealing technology

a. Fluoroplastic centrifugal pump adopts double-end mechanical seal system, with the following characteristics:

Seal life: up to 8000-10000 hours

Leakage rate: <0.5ml/h (much higher than API682 standard)

Auxiliary system: optional flushing, cooling and other devices

b. Sealing configuration recommendations:

Standard working conditions: single-end mechanical seal

Hazardous media: double-end mechanical seal + isolation liquid system

Particle-containing media: carbide sealing surface

2.3 Optimized hydraulic design

a. Through CFD fluid dynamics simulation optimization, modern fluoroplastic centrifugal pumps have the following features:

Efficiency improvement: 15-20% higher than traditional design

Energy consumption reduction: more than 30% energy saving under typical working conditions

NPSHr value: can be as low as 2m, effectively avoiding cavitation

b. Performance curve features:

Flat Q-H curve, suitable for flow fluctuation conditions

Wide high-efficiency zone, flow range of efficiency>75% up to 40%

Low specific speed design, suitable for high head requirements

3. Fluoroplastic centrifugal pump purchase guide

3.1 Comparison of well-known brands

3.2 Key parameters for purchase

Flow range: 0.5-500m³/h

Lift range: 5-80m

Temperature range:

PVDF: -20℃~90℃

PTFE: -50℃~150℃

Pressure level: PN6-PN16

3.3 Key points for supplier evaluation

Qualification certification: ISO9001, API685, etc.

Project cases: Application experience in the same industry

R&D capabilities: Number of patented technologies

After-sales service: Response time, spare parts inventory

4.Typical application cases

Case 1: A chlor-alkali enterprise in Hubei

Problem: The original stainless steel pump corroded and perforated in 3 months

Solution: Use PTFE-lined centrifugal pump

Effect: Extended service life to 4 years, reduced maintenance cost by 70%

Case 2: A pharmaceutical factory in Zhejiang

Requirement: Transport 40% NaOH, temperature 65℃

Selection: PVDF material, double-end seal

Operation data: Continuous operation for 18 months without failure

5. Maintenance and maintenance recommendations

a. Daily inspection:

Vibration value: <4.5mm/s (ISO10816 standard)

Bearing temperature: <75℃

Seal leakage: Visual inspection

a. Regular maintenance:

Every 2000 hours: Check the mechanical seal

Every 5000 hours: Replace the bearing lubrication Grease

Every year: comprehensive disassembly and inspection

c. Fault handling:

Flow rate drop: check impeller wear/blockage

Abnormal vibration: check alignment/bearing status

Seal leakage: check seal surface wear.

Sixth, industry development trend

a. Intelligent direction:

Equipped with IoT sensors to monitor operating status in real time

Predictive maintenance system to reduce unexpected downtime

b. Material innovation:

Nano-modified fluoroplastics to improve mechanical strength

Composite materials application to optimize cost performance

c. Energy efficiency improvement:

IE4 ultra-high energy efficiency motor matching

Continuous optimization of hydraulic model

Conclusion

Fluoroplastic centrifugal pumps have become the preferred equipment for conveying highly corrosive media such as caustic soda due to their excellent corrosion resistance, reliable sealing technology and high efficiency and energy saving. When choosing, it is recommended that users compare the technical characteristics and service capabilities of different brands according to specific working conditions and choose the most suitable products. With the advancement of materials science and manufacturing technology, fluoroplastic centrifugal pumps will play an important role in a wider range of chemical fields and provide strong guarantees for the safe and efficient operation of process industries.

#Corrosion resistant pumps #Chemical Process Pumps #PTFE Pumps #PVDF Pumps #Caustic soda delivery pump #Fluoroplastic pump manufacturers

How to choose from 304, 316, 316L, 2205, 904L stainless steel materials when buying a pump

2025-05-16

Stainless steel has become one of the most commonly used materials in pump manufacturing due to its excellent corrosion resistance and mechanical properties. This article focuses on the application of several common stainless steel materials in pumps, analyzes their chemical composition differences, mechanical performance characteristics and applicable working conditions, and provides a reference for users to select models.

1. "The most familiar friend": 304 stainless steel (06Cr19Ni10)

Chemical composition and characteristics

304 stainless steel is the most commonly used austenitic stainless steel, and its typical chemical composition is:

· Chromium (Cr): 18-20%

· Nickel (Ni): 8-10.5%

· Carbon (C): ≤0.08%

· Manganese (Mn): ≤2.0%

· Silicon (Si): ≤1.0%

· Phosphorus (P): ≤0.045%

· Sulfur (S): ≤0.03%

a、Mechanical properties

·Tensile strength: ≥515 MPa

·Yield strength: ≥205 MPa

·Elongation: ≥40%

·Hardness: ≤201 HB

b、Applicable working conditions

304 stainless steel has good corrosion resistance and formability, and is suitable for:

·General corrosive media: such as dilute nitric acid, organic acids, etc.

·Temperature range: -196℃ to 800℃ (short term)

Due to the properties of 304 stainless steel, it is commonly used in: drinking water systems, food processing, and chemical industries for the transportation of weakly corrosive media.

Stainless steel sewage pump

c. 304 stainless steel has limitations in use

·Not resistant to chloride corrosion (such as seawater and salt water)

·Prone to stress corrosion cracking in sulfur-containing environments

2. "A Warrior Who Rejects Corrosion": 316 Stainless Steel (06Cr17Ni12Mo2)

Chemical Composition and Characteristics

316 stainless steel is an upgraded version of 304, with the addition of molybdenum:

· Chromium (Cr): 16-18%

· Nickel (Ni): 10-14%

· Molybdenum (Mo): 2-3%

· Carbon (C): ≤0.08%

The remaining elements are similar to 304, and the corrosion resistance is greatly improved.

a、Mechanical properties

·Tensile strength: ≥515 MPa

·Yield strength: ≥205 MPa

·Elongation: ≥40%

·Hardness: ≤217 HB

b、Applicable working conditions

Compared to 304 stainless steel, 316 has better corrosion resistance due to the addition of molybdenum:

· Chloride environment: more resistant to seawater and salt water corrosion than 304

· Strong acid environment: better resistance to sulfuric acid, phosphoric acid, etc.

· Temperature range: -196℃ to 800℃ (short term)

Therefore, it is commonly used in: moderately corrosive media in seawater desalination, pharmaceutical, and chemical industries

c、Advantages

·Higher pitting equivalent PREN value (about 25, 304 is about 19)

·More resistant to crevice corrosion and stress corrosion cracking

3. "Special Forces Specialized in Solving Difficult Problems": 316L Stainless Steel (022Cr17Ni12Mo2)

Chemical Composition and Characteristics

316L is an ultra-low carbon version of 316:

Carbon (C): ≤0.03% (significantly lower than 0.08% of 316)

The remaining components are basically the same as 316

a、Mechanical Properties

·Tensile Strength: ≥485 MPa

·Yield Strength: ≥170 MPa

·Elongation: ≥40%

·Hardness: ≤217 HB

b、Applicable Working Conditions

The low carbon content makes it more suitable for:

·Welding applications: reduce carbide precipitation in the heat affected zone of welding

·High temperature corrosion environment: more resistant to intergranular corrosion in the range of 450-850℃

·Highly corrosive media: such as concentrated nitric acid, organic acids, etc.

c、Common Applications

Nuclear industry, fine chemicals, high temperature corrosion environment

d、Special Advantages

·No annealing required after welding

·More stable in long-term high temperature environment

4. "The Smooth Socialite": Duplex Stainless Steel 2205 (022Cr23Ni5Mo3N)

Chemical Composition and Characteristics

Duplex stainless steel has both austenite and ferrite structures:

· Chromium (Cr): 22-23%

· Nickel (Ni): 4.5-6.5%

· Molybdenum (Mo): 3.0-3.5%

· Nitrogen (N): 0.14-0.20%

· Carbon (C): ≤0.03%

a、Mechanical Properties

· Tensile Strength: ≥620 MPa

· Yield Strength: ≥450 MPa (significantly higher than austenitic stainless steel)

· Elongation: ≥25%

· Hardness: ≤290 HB

IH stainless steel centrifugal pump

b、Applicable working conditions

2205 duplex stainless steel is particularly suitable for:

·High chloride environment: high concentration chloride solutions such as seawater and brine

·High stress environment: applications requiring high strength

·Environment where corrosion and wear coexist: such as media containing solid particles

·Temperature range: -50℃ to 300℃

·Common applications: offshore oil platforms, chemical process pumps, desulfurization systems

c、Outstanding features of 2205 duplex stainless steel

·PREN value up to 35-40

·Excellent resistance to stress corrosion cracking

·Good wear resistance and fatigue strength

5. "Challenger in extreme environments": Super austenitic stainless steel 904L (015Cr21Ni26Mo5Cu2)

Chemical composition and characteristics

Super austenitic stainless steel with high alloy content:

· Chromium (Cr): 19-23%

· Nickel (Ni): 23-28%

· Molybdenum (Mo): 4-5%

· Copper (Cu): 1-2%

· Carbon (C): ≤0.02%

a、Mechanical properties

· Tensile strength: ≥490 MPa

· Yield strength: ≥216 MPa

· Elongation: ≥35%

· Hardness: ≤220 HB

b、904L applicable working conditions

904L is suitable for extremely corrosive environments:

1. Strong acid environment: concentrated sulfuric acid, phosphoric acid, etc.

2. Complex mixed media: media containing multiple corrosive components

3. High temperature corrosive environment: up to 400℃

Because of these characteristics, 904L is commonly used in: chemical industry strong corrosive media transportation, flue gas desulfurization system, pharmaceutical industry, etc.

c、Special advantages

·Good corrosion resistance to both reducing and oxidizing media

·Excellent resistance to pitting and crevice corrosion

6. Purchase considerations

1. Medium characteristics: pH value, chloride ion content, oxidizing/reducing properties

2. Temperature range: operating temperature and fluctuation range

3. Mechanical requirements: pressure, flow rate, whether it contains solid particles

4. Economic efficiency: balance between initial cost and service life

Buyers can consult the manufacturer or make inquiries based on this information.

7. Scope of application and application recommendation

8.Conclusion

The selection of stainless steel materials for pumps requires comprehensive consideration of media characteristics, working environment and economic factors. The 304/316 series is suitable for most general corrosive environments, titanium-stabilized stainless steel is suitable for high-temperature applications, and duplex stainless steel and super austenitic stainless steel are for more demanding working conditions. The correct material selection can not only extend the service life of the stainless steel pump, but also reduce maintenance costs and ensure safe and stable operation of the system. It is recommended that users consult professional technicians when selecting and make a decision after a detailed working condition analysis.

#304 stainless steel pump #316 stainless steel pump #316L stainless steel pump #Stainless steel sea water pump

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