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Method for forging heating of T-shaped high temperature alloy GH3617M

A GH3617M, forging heating technology, applied in the field of forging, can solve the problems of short time in high temperature heat preservation state, coarse grains of T-shaped forgings, etc., and achieve the effect of improving tensile strength

Active Publication Date: 2015-08-05
WUXI PAIKE HEAVY CASTING & FORGING
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] In view of the above existing problems, the applicant has carried out research and improvement, and provides a T-shaped superalloy GH3617M forging heating method. After the vertical end of the T-shaped forging is coated with thermal insulation cotton, due to the thermal insulation effect of the thermal insulation cotton, the T-shaped The temperature of the vertical end of the forging is lower than that of the end not covered with thermal insulation cotton, so that the vertical end of the T-shaped forging is in a high-temperature heat preservation state for a shorter time, which can effectively improve the grain size of the T-shaped forging and improve the tensile strength of the T-shaped forging. Strength, yield strength, fatigue strength and high temperature creep properties

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  • Method for forging heating of T-shaped high temperature alloy GH3617M
  • Method for forging heating of T-shaped high temperature alloy GH3617M

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Embodiment 1

[0024] A T-type superalloy GH3617M forging heating method comprises the following steps:

[0025] Step 1: Place bar 1 in an electric furnace for 15 minutes to keep warm. The temperature of the electric furnace is 150°C. The purpose of preheating the bar is achieved through the heat preservation of the electric furnace, so as to facilitate the subsequent coating work.

[0026] Step 2: Take out the rod 1 obtained from the first step of heat preservation from the electric furnace, and coat one end of the rod 1 with SA-35 glass agent. The coating is applied by spray gun or manual brushing. The above coating The thickness is 1mm.

[0027] The third step: the first heating stage: put the bar material 1 into the electric furnace and raise the temperature to 850-900°C, the holding time is 5-6h, and the heat preservation coefficient is 0.75mm / s.

[0028] Step 4: If figure 1 As shown, the rod 1 is taken out, and one end of the rod is covered with thermal insulation cotton 2, and the t...

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Abstract

The invention relates to a method for forging heating of T-shaped high temperature alloy GH3617M. The heating and heat insulation process at two stages is performed, the vertical end of a T-shaped forged piece is wrapped with heat insulation cotton; due to the heat insulation effect of the heat insulation cotton, the temperature of the vertical end of the T-shaped forged piece is lower than that of one end of the T-shaped forged piece unwrapped with the heat insulation cotton, the time for a high temperature heat insulation state of the vertical end of the T-shaped forged piece is short, the problem that grains are large due to the deformation of the vertical end of the T-shaped forged piece is solved, and the tensile strength, the yield strength, the fatigue strength and the high-temperature creep performances of the T-shaped forged piece are improved.

Description

technical field [0001] The invention relates to the field of forging, in particular to a forging heating method of a T-type superalloy GH3617M. Background technique [0002] GH3617M is a high-alloyed aging-strengthened nickel-based deformed superalloy, which is often used in the manufacture of gas turbines. Gas turbines are advanced and complex complete sets of power machinery equipment and are typical high-tech intensive products. At present, my country has become the world's largest The potential market for gas turbines. During the forging process of the existing gas turbine T-shaped forgings, the vertical end of the T-shaped forgings is basically not deformed. It is in a state of empty firing during the forging process, which will cause grain growth, thereby reducing the T-shaped forgings. Tensile strength and yield strength, reduced fatigue strength and high temperature creep properties. Contents of the invention [0003] In view of the above existing problems, the...

Claims

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Application Information

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IPC IPC(8): B21J1/06
Inventor 刘其源刘智陈翠李湘君王俊许亮
Owner WUXI PAIKE HEAVY CASTING & FORGING
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