A stainless steel pump body forging forming process

A stainless steel pump and forming technology, applied in metal processing equipment and other directions, can solve the problems of large deformation resistance, long processing cycle, and high raw material cost, and achieve the effect of reducing cutting processing time, short cutting processing cycle, and reducing raw material cost.

Active Publication Date: 2022-06-28
WUXI HONGDA HEAVY IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the alloy content of stainless steel forgings is high, the deformation resistance is large, and free forging is difficult. It is more difficult to adopt the near-net forming process for large-scale pump body forgings with complex structures. Therefore, the existing stainless steel pump body forgings cannot be formed by near-net forming. technology, which makes the raw material cost of the whole pump parts high and the subsequent cutting and processing cycle is long

Method used

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  • A stainless steel pump body forging forming process
  • A stainless steel pump body forging forming process
  • A stainless steel pump body forging forming process

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specific Embodiment

[0032] The specific embodiment is made according to the process of the present invention figure 1 The specific processing steps of step (2) near net shape forging are as follows:

[0033] a. The steel ingot is heated and uniformly penetrated, and then the wide anvil is used for upsetting and drawing to ensure the compaction and forging, the structure is dense, and the flaw detection meets the requirements;

[0034] b Billet making: The first fire, the temperature is 950-1250 ℃, the riser and nozzle are cut off from the ingot; the second fire, the temperature is 900-1200 ℃, 8 times of forging and blanking are carried out by the wide anvil strong compaction process, and the forging square is 980mm. ×1200mm×1500mm;

[0035] c. Mould forming, pressing eccentric flat square: temperature 900-1200℃, pull one end and one end pulling ￠980mm×400mm, put it into the mold to form and press eccentric flat square 1350mm×1150mm×1000mm, eccentric distance 110mm;

[0036] d Final forming: The...

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Abstract

The invention provides a stainless steel pump body forging forming process, which makes the stainless steel material suitable for near forming technology, reduces the cost of raw materials, shortens the subsequent cutting and processing cycle, and reduces the overall cost of the entire stainless steel pump body. (1) Perform forming simulation with simulation software, select the best deformation conditions, design and make molds; (2) Select forgings with circular section asymmetric punching, the shape of the forging blank is close to the shape of the finished product; during the processing and forming of forgings, Control the deformation amount of 10-15% of each deformation part in the last fire during the final forming, control the grain size of the austenitic stainless steel structure, achieve the effect of deformation strengthening, the performance is qualified, and the flaw detection is qualified; (3) The near-formation after the flaw detection is qualified The forgings are subjected to solution treatment, and then the hardness test and inspection test are carried out, and then machining and cutting are carried out according to the drawings; (4) After the machining and cutting products pass the flaw detection, they are packaged and delivered.

Description

technical field [0001] The invention relates to the technical field of the manufacture of stainless steel pump bodies, in particular to a forming process for stainless steel pump body forgings. Background technique [0002] Austenitic stainless steel has very good plasticity, impact toughness and good corrosion resistance. It is widely used in pressure vessel equipment, especially in the environment with high temperature, high pressure and high corrosion resistance. With the continuous progress of petrochemical equipment technology, the use of austenitic stainless steel materials is becoming more and more extensive, and the requirements for its performance are getting higher and higher. The use of forgings instead of castings will be more and more, which is an inevitable trend of development. However, the alloy content of stainless steel forgings is high, the deformation resistance is large, and free forging is difficult. It is even more difficult to use near-net forming pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/02B21J5/00
CPCB21J5/02B21J5/002
Inventor 张瑞庆张忠明温铁军马晗珺
Owner WUXI HONGDA HEAVY IND
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