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- Spiral welded pipe equipment
- High frequency straight seam welded pipe production line
- Hot-rolled seamless pipe equipment
- Ductile iron pipe production line
- Hot push pipe bending equipment
- Hydraulic testing machine
- Beveling machine
- Expander
- Steel pipe straightening machine
- Packaging production line
- Finishing line
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- Submerged arc welding - wire feeder
- Submerged arc welding - control circuit board
- Cutting machine - cutting head
- High-frequency welding - welding the large arm and small arm
- High-frequency welding - circuit boards and components
- Medium frequency annealing - induction heater
- Anti-corrosion special - medium frequency inductor
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- Continuous casting steelmaking spare parts
- Heat-resistant roller
- Heating unit and components
- Spindle connection unit and coupling
- Elastic damping device
- Rolling mill
- 1#, 2#, 3# flying shears
- Entrance guard device
- Other parts of the rolling mill
- Transmission components
- Copperware
- Accessories for water sports equipment
- Cooling accessories
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SolutionThe equipment manufactured by the company is widely used in the processing of basic building materials, aerospace, automobile manufacturing, construction machinery manufacturing, transportation, municipal bridges and hvac, national-level oil pipeline construction, port infrastructure, marine bridge engineering, river dam and embankment construction, green energy and other industrial applications.
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About usSichen Machinery is a global provider of automation solutions for metallurgical equipment, mainly engaged in the research, development, production, and sales of metallurgical products such as rolling mills and pipe-making equipment.
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ServiceThe company will rely on a large number of technical research and development and on-site commissioning experience accumulated in the manufacture of various equipment in the past two decades, relying on the domestic and international markets, and is committed to providing high-quality products and services to the majority of users.
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Steel pipe heat treatment production line
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Product Category
Medium frequency heat treatment production line
Tags
Metallurgical heavy machinery and equipment
- Product description
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Process Description
Steel pipe loading → Rotating forward → Medium frequency heating → Water quenching → Inclined material dropping → Tempering loading → Rotating forward → Medium frequency heating → Uniform heating → (Water spray rapid cooling) → Air cooling
Process Requirements Based on Steel Pipe Application
1
Casing, tubing, drill pipe, and line pipe in oilfield-specific pipes
According to the steel grade, the corresponding processes of normalizing, normalizing plus tempering, and quenching plus tempering (tempering) are adopted.
2
High-pressure boiler tubes, high-pressure fertilizer tubes
Generally, normalizing, normalizing plus tempering, quenching plus tempering, and solution treatment of austenitic stainless steel pipes are used.
Basis of Steel Pipe Heat Treatment Process
According to the standards and performance requirements of the steel pipe, determine which process to use, namely normalizing, quenching, tempering, and annealing. Then, determine the process parameters according to the steel grade of the steel pipe, such as process temperature, holding time, and cooling method.
Full Quenching
Casing, tubing, drill pipe, and line pipe in oilfield-specific pipes are generally made of alloy structural steel, which is hypoeutectoid steel. In order to improve the hardenability of the steel and reduce the heating time, Ac3+50℃ is used as the austenitizing temperature of the steel pipe, which is the heating temperature for full quenching.
High Temperature Tempering
High-grade steel pipe products require quenching and high-temperature tempering to obtain tempered sorbite microstructure and good comprehensive performance combination. The purpose of quenching is to obtain martensite microstructure. However, in actual production, it is difficult to obtain 100% martensite. In this way, uniform sorbite can be obtained after high-temperature tempering. This is very important for high-strength, high-toughness, and H2S stress corrosion resistant steel grades.
Common Steel Tempering Treatment Specifications
Steel Grade
Quenching
Tempering
Heating Temperature/℃
Cooling Medium
Heating Temperature/℃
Cooling Medium
40
830~850
Water
580~640
Air
45
820~840
Water
550~600
Air
50
820~840
Water
560~620
Air
40Cr
840~860
Oil
600~650
Oil, Water
35SiMn
830~860
Oil
600~650
Oil, Water
30CrMnSi
880
Oil
540
Oil, Water
42SiMn2
840~860
Oil
610~660
Oil, Water
35CrMo
880
Oil
560
Oil, Water
40MnB
850
Oil
500
Oil, Water
40MnVB
850
Oil
500
Oil, Water
45MnB
840~860
Oil
600~650
Oil, Water
40CrNiMo
850
Oil
600
Oil, Water
40CrMnMoVBA
850~870
Oil
640~680
Oil, Water
38CrAlA/38CrMoAlA
930~950
Oil
630~650
Air, Water
45Mn2
830~850
Oil
550~600
Water
50Mn2
810~840
Oil
500~600
Water
2Cr13
1000~1050
Oil
600~700
Steel pipe heat treatment production line
Still deciding? If you are interested, you need to take a sample first, Contact us!
Product Category
Tags
Metallurgical heavy machinery and equipment
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