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Pipe casting method based on stainless steel and carbon steel bimetallic mixed solution

A casting method, stainless steel technology, applied in the direction of metal material coating process, coating, solid diffusion coating, etc., can solve the problems of rust hardness and other problems, achieve the effects of not easy to deform and bend, improve practicability, and good fatigue strength

Inactive Publication Date: 2018-08-07
北京鼎翰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to make up for the deficiencies of the prior art, and to provide a pipe casting method based on the bimetallic mixture of stainless steel and carbon steel, which has the advantages of relatively high hardness and the ability to effectively avoid corrosion and rust Existing pipes can avoid the problem that rust and high hardness cannot exist at the same time

Method used

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  • Pipe casting method based on stainless steel and carbon steel bimetallic mixed solution

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Effect test

Embodiment 1

[0028] A pipe casting method based on a stainless steel and carbon steel bimetallic liquid mixture, the manufacturing method comprising the following steps:

[0029] S1, weigh stainless steel according to the weight percentage (its composition is C: 0.12%, Si: 0.74%, Mn: 0.90%, S: 0.025%, P: 0.030%, Cr: 16.00%, Ni: allowed to contain 0.55%, the remaining The amount is iron) and carbon steel raw materials (its composition is C: 0.22%, Si: 0.15%, Mn: 0.3%, P: 0.025%, S: 0.025%, the balance is iron), stainless steel raw materials and carbon steel Raw material ratio is 2:1;

[0030] S2, putting the stainless steel raw material and carbon steel raw material weighed in step S1 into two melting and casting furnaces to be melted and cast into casting liquid respectively, and the vacuum degree in the vacuum melting furnace is 1Pa, for standby;

[0031] S3, raising the temperature of the centrifuge mold to 300°C, then injecting the stainless steel casting liquid and carbon steel castin...

Embodiment 2

[0035] A pipe casting method based on a stainless steel and carbon steel bimetallic liquid mixture, the manufacturing method comprising the following steps:

[0036] S1, weigh stainless steel according to the weight percentage (its composition is C: 0.12%, Si: 0.73%, Mn: 0.80%, S: 0.024%, P: 0.029%, Cr: 16.60%, Ni: allowed to contain 0.40%, the remaining The amount is iron) and carbon steel raw materials (its composition is C: 0.24%, Si: 0.17%, Mn: 0.36%, P: 0.24%, S: 0.24%, the balance is iron), stainless steel raw materials and carbon steel Raw material ratio is 2:1;

[0037] S2, putting the stainless steel raw material and carbon steel raw material weighed in step S1 into two casting furnaces to be melted and cast into a casting liquid respectively, and the vacuum degree in the vacuum melting furnace is 1.1Pa, for standby;

[0038] S3, raising the temperature of the centrifuge mold to 320°C, then injecting the stainless steel casting liquid and carbon steel casting liquid ...

Embodiment 3

[0042] A pipe casting method based on a stainless steel and carbon steel bimetallic liquid mixture, the manufacturing method comprising the following steps:

[0043] S1, weigh stainless steel according to the weight percentage (its composition is C: 0.12%, Si: 0.70%, Mn: 0.70%, S: 0.023%, P: 0.028%, Cr: 16.70%, Ni: allowed to contain 0.30%, the remaining The amount is iron) and carbon steel raw materials (its composition is C: 0.25%, Si: 0.18%, Mn: 0.37%, P: 0.25%, S: 0.25%, the balance is iron), stainless steel raw materials and carbon steel Raw material ratio is 2:1;

[0044] S2, putting the stainless steel raw material and carbon steel raw material weighed in the step S1 into two casting furnaces to be melted and cast into a casting liquid respectively, and the vacuum degree in the vacuum melting furnace is 1.2Pa, for standby;

[0045] S3, raising the temperature of the centrifuge mold to 330°C, then injecting the stainless steel casting liquid and carbon steel casting liq...

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Abstract

The invention discloses a pipe casting method based on a stainless steel and carbon steel bimetallic mixed solution, and relates to the technical field of metal casting. The pipe casting method comprises the following steps of weighing stainless steel and carbon steel raw materials in percentage by weight, respectively adding the weighed stainless steel and carbon steel raw materials into two fusion casting furnaces to fuse and cast into a casting solution, fetching out when the temperature of the mixed casting solution is 1630 to 1650 DEG C, casting the mixed casting solution into a mold cavity of a mold of a centrifugal casting machine, and starting the centrifugal casting machine; after casting and cooling are completed, fetching out the completed pipe blank, and hardening; fetching outthe pipe blank, polishing, and flattening the end, so as to obtain the finished pipe. The pipe casting method based on the stainless steel and carbon steel bimetallic mixed solution has the advantages that the antirust ability of the stainless steel and the high hardness of the carbon steel are simultaneously realized; the anti-fatigue strength is higher, the rust of the finished pipe in the useprocess is avoided, the good anti-cracking ability is realized, and the service life of the finished pipe is greatly prolonged.

Description

technical field [0001] The invention relates to the technical field of metal casting, in particular to a pipe casting method based on a bimetallic mixed liquid of stainless steel and carbon steel. Background technique [0002] Pipe is the material used to make pipe fittings. Different pipe fittings use different pipe materials. The quality of the pipe directly determines the quality of the pipe fittings. Such pipes are often used in construction projects, power plants and chemical plants. Seamless steel pipes, low-pressure Seamless steel pipes for boilers, seamless steel pipes for oil cracking and stainless steel seamless steel pipes for fluid transportation, the common materials are alloy, carbon steel and stainless steel. [0003] Traditional pipes are generally made of a separate metal. Although aluminum alloy pipes can effectively avoid rust and corrosion, carbon steel pipes have high hardness. Different types of pipes will be selected for different production companies....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D13/02B22D19/16C22C38/18C22C38/02C22C38/04C22C38/40C23C8/38
CPCB22D13/02B22D19/16C22C38/02C22C38/04C22C38/18C22C38/40C23C8/38
Inventor 董晶龙
Owner 北京鼎翰科技有限公司
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