Production method of titanium alloy large-diameter square thin-walled pipe

A technology for thin-walled pipes and production methods, which is applied in the field of material processing, can solve the problems of inapplicability of cold rolling and cold drawing processes, and high requirements for hot rolling process equipment, so as to meet simple equipment requirements and operation requirements, reduce energy consumption, and increase yield Effect

Active Publication Date: 2022-02-11
索罗曼(常州)合金新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide the production method of titanium alloy large-diameter square thin-walled pipe
[0005] The technical problem to be solved in the present invention: In view of the shortcomings of the two main processes of the existing square tube forming, that is, the hot rolling process requires high equipment, and the cold rolling and cold drawing process is not suitable for large-diameter tubes, it is necessary to develop a titanium alloy large-diameter square tube. Thin-walled pipe production method

Method used

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  • Production method of titanium alloy large-diameter square thin-walled pipe
  • Production method of titanium alloy large-diameter square thin-walled pipe
  • Production method of titanium alloy large-diameter square thin-walled pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The anti-oxidation coating is prepared by the following steps:

[0032] Step S1, weighing the following raw materials in parts by weight: SiO 2 10 parts, MgO 5 parts, SiC 5 parts, ZrO 2 2 parts, 1 part of CaO, 5 parts of ceramic micropowder;

[0033] Step S2, the SiO 2 , MgO, SiC, ZrO 2 , CaO and ceramic micropowder are mixed evenly and ground finely, and filtered through a 200-mesh filter screen to obtain the base material;

[0034] Step S3, mix 31.2g of graphite powder, 23.4g of potassium persulfate, 23.1g of phosphorus pentoxide and 110.5mL of concentrated sulfuric acid with a mass fraction of 98%, and react in a water bath at 80°C for 4.5h. After cooling to room temperature, use Diluted with deionized water, washed 3 times with deionized water, and dried in an oven at 70°C for 3 hours to obtain pre-oxidized graphite powder;

[0035] Step S4, add 35.6g of pre-oxidized graphite powder into 1.2L of concentrated sulfuric acid with a mass fraction of 98%, add 150....

Embodiment 2

[0039] The anti-oxidation coating is prepared by the following steps:

[0040] Step S1, weighing the following raw materials in parts by weight: SiO 2 12 parts, MgO 5 parts, SiC 6 parts, ZrO 2 2 parts, 2 parts of CaO, 5 parts of ceramic micropowder;

[0041] Step S2, the SiO 2 , MgO, SiC, ZrO 2 , CaO and ceramic micropowder are mixed evenly and ground finely, filtered through a 250-mesh filter to obtain the base material;

[0042] In step S3, mix 32.5g of graphite powder, 24.2g of potassium persulfate, 23.5g of phosphorus pentoxide and 111.6mL of concentrated sulfuric acid with a mass fraction of 98%, and react in a water bath at 80°C for 4.5h. After cooling to room temperature, use Diluted with deionized water, washed 3 times with deionized water, dried in an oven at 75°C for 3 hours to obtain pre-oxidized graphite powder;

[0043] Step S4, add 35.8g of pre-oxidized graphite powder into 1.25L of concentrated sulfuric acid with a mass fraction of 98%, add 150.8g of 0.5m...

Embodiment 3

[0047] The anti-oxidation coating is prepared by the following steps:

[0048] Step S1, weighing the following raw materials in parts by weight: SiO 2 15 parts, MgO 6 parts, SiC 8 parts, ZrO 2 3 parts, 3 parts of CaO, 6 parts of ceramic micropowder;

[0049] Step S2, the SiO 2 , MgO, SiC, ZrO 2 , CaO and ceramic micropowder are mixed evenly and ground finely, and filtered through a 300-mesh filter screen to obtain the base material;

[0050] Step S3, mix 33.1g of graphite powder, 25.6g of potassium persulfate, 24.5g of phosphorus pentoxide and 112.4mL of concentrated sulfuric acid with a mass fraction of 98%, and react in a water bath at 80°C for 4.5h. After cooling to room temperature, use Diluted with deionized water, washed 3 times with deionized water, and dried in an oven at 80°C for 4 hours to obtain pre-oxidized graphite powder;

[0051] Step S4, add 36.8g of pre-oxidized graphite powder to 1.3L of concentrated sulfuric acid with a mass fraction of 98%, add 151.1...

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Abstract

The invention discloses a production method of a titanium alloy large-diameter square thin-walled pipe, and belongs to the technical field of material processing. The production method includes the first step: preheating and fixing the mold and applying lubricant on the surface of the mold; the second step: brushing the surface of the titanium alloy round tube billet with an anti-oxidation coating and heating it to 800 ° C, and the heated The titanium alloy round tube billet is loaded into the mold, the press presses down the punch rod, and the left punch and the right punch are pushed to move to the two sides respectively, and the round tube is expanded into a square tube to obtain a titanium alloy large-diameter square tube. wall tubing. In the present invention, the process of mold bulging is used to form the titanium alloy round tube to the square tube. The production capacity is considerable, and the equipment requirements and operation requirements are much simpler. After the test mode, the diameter of the square tube produced by this process can reach 300mm. The product The tolerance is within ±0.5mm, and the forming of one tube does not require cutting to length, which also achieves the effect of improving the yield of finished products and reducing energy consumption.

Description

technical field [0001] The invention belongs to the technical field of material processing and relates to a production method of a titanium alloy large-diameter square thin-walled pipe. Background technique [0002] Titanium alloy has the advantages of low density, high specific strength, corrosion resistance, and non-magnetic properties. It has broad application prospects in the fields of aviation, aerospace, chemical industry, weapons, ships, automobiles, construction, and medical treatment. It is known as the metal of the 21st century. Material, has the reputation of "space metal", "ocean metal" and "third metal". Therefore, TA16, TA18, TA10, TC4 and other titanium alloys are processed into pipes of various specifications, which are used in aviation, chemical industry, ships and other fields. [0003] At present, the production of titanium alloy square tubes (non-welded tubes) is less, and there is no relatively mature process. In the production process of steel square t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D39/20B21D37/18B21D37/10B21D37/16C09D1/00C09D7/61C09D7/62
CPCB21D39/20B21D37/18B21D37/10B21D37/16C09D1/00C09D7/61C09D7/62
Inventor 陈修琳张雷钱超鹏
Owner 索罗曼(常州)合金新材料有限公司
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