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Manufacturing method of nickel-based alloy tube

A technology of nickel-based alloy and manufacturing method, applied in metal rolling and other directions, can solve problems such as difficulty, high cost, trouble, etc., and achieve the effect of improving the yield of finished products

Active Publication Date: 2014-04-09
常州中钢精密锻材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Nickel-based alloy 690 has excellent resistance to stress corrosion cracking and is widely used in corrosion-resistant environments. It is mainly used in pipeline systems. There are two processes for the production of pipes: one is hot extrusion, and the production cost is higher; the other is One is cross-rolling pipe piercing. In the past, this kind of process required boring, and boring required special tools, which was costly and difficult. In addition, annealing was required after boring, which was very troublesome. Therefore, this kind of technology needs improvement

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0012] An embodiment of a method for manufacturing a nickel-based alloy pipe of the present invention, the steps are:

[0013] a. Heating: place the nickel-based alloy 690 round rod in an intermediate frequency induction furnace for heating, and the heating temperature is 1140°C;

[0014] b. Insulation: use a resistance furnace to insulate the round bar in step a, the insulation temperature is 1150°C, and the insulation time is 30min;

[0015] c. Prepare the piercing equipment: prepare the piercing equipment LXC90 enhanced two-roll cross-rolling piercing machine, and adjust the parameters: roll diameter 580mm, roll feed angle 8°, roll entrance cone angle 2.8°, roll exit cone angle 3.2°, roll Material 50Mn, plug diameter 64mm, plug material H13, rolling distance 78mm, guide wheel base 87mm, ellipticity 1.115, plug extension 63mm;

[0016] d. Perforation: use perforation equipment to perforate, and the size of the pipe after rolling is 10.2mm in wall thickness and 90.4mm in out...

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Abstract

The invention relates to a manufacturing method of a nickel-based alloy tube. The manufacturing method includes the steps of heating, temperature keeping, punching, room cooling and testing. A skew rolling poling technology is stilled used, a solid tube blank is directly used without performing boring treatment, poling is performed when the tube blank is heated to a certain temperature, the material yield is greatly improved, cost is greatly reduced, and the use ratio of raw material is improved.

Description

technical field [0001] The invention relates to a manufacturing method of a nickel base alloy pipe. Background technique [0002] Nickel-based alloy 690 has excellent resistance to stress corrosion cracking and is widely used in corrosion-resistant environments. It is mainly used in pipeline systems. There are two processes for the production of pipes: one is hot extrusion, and the production cost is higher; the other is One is cross-rolling pipe piercing. In the past, this kind of process required boring, and boring required special tools, which was costly and difficult. In addition, annealing was required after boring, which was very troublesome. Therefore, this kind of Technology needs improvement. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an improved manufacturing method of the nickel-based alloy tube in order to solve the shortcomings of the existing nickel-based alloy 690 tube manufacturing process i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B19/04
Inventor 张建明胡燕梅
Owner 常州中钢精密锻材有限公司