CN105750465A

CN105750465A - Method for reducing forging cracking tendency of high temperature alloy material

Info

Publication number: CN105750465A
Application number: CN201610272023.7A
Authority: CN
Inventors: 李建; 雷德江; 丁勇; 张华国
Original assignee: SICHUAN LIUHE FORGING Co Ltd
Current assignee: Sichuan Liuhe Special Metal Materials Co., Ltd.
Priority date: 2016-04-28
Filing date: 2016-04-28
Publication date: 2016-07-13
Anticipated expiration: 2036-04-28
Also published as: CN105750465B

Abstract

The invention discloses a method for reducing the forging cracking tendency of a high temperature alloy material, and belongs to the technical field of high temperature alloy materials.The method comprises the following steps that firstly, steel ingots to be forged are bound with asbestos cloth; secondly, the steel ingots bound in the step 1 are heated, heat preservation is performed for 10-16 h to enable the temperature of the steel ingots to be uniform, and then the steel ingots are taken out; finally, the steel ingots taken out in the step 2 are forged, and the deformation amount of every heating time is controlled to be about 20% during forging.According to the method, the forged finished product rate is increased to 60% or above from original about 20%, the method is particularly suitable for forging of GH4049, and the material can be better forged and delivered to a user for use.

Description

A kind of method reducing high-temperature alloy material forging crack tendency

Technical field

The present invention relates to alloy material, particularly relate to a kind of high-property heat resistant steel, its preparation method and application thereof.

Background technology

Greatly developing along with aerospace, some high temperature alloys obtain as the main material of engine turbine blade To being widely applied, and consumption increases year by year.

Among these, apply more such as GH4049, be a kind of Ni-based male sportsman.GH4049 Typical chemical composition, be by mass percentage: C 0.04-0.10%, Cr 9.5-11.0%, Co 14.0-16.0%, W 5.0-6.0%, Al 3.7-4.4%, Ti 1.4-1.8%, V 0.2-0.5%, B≤0.025%, Fe≤1.50%, Mn≤0.50%, Si≤0.50, P≤0.10%, S≤0.10%, Bi≤0.0001%, Sn ≤ 0.0012%, Cu≤0.07%, Sb≤0.0025, Ce≤0.02, Pb≤0.001, surplus is Ni；This High-temperature alloy material has preferably mechanical behavior under high temperature.

But, this high-temperature alloy material has the feature of difficult deformation, forging easily cracking, yield rate during production The lowest, typically about 20% so that production cost is the highest, production is caused bigger difficulty.

Summary of the invention

The purpose of the present invention is that provides a kind of method reducing high-temperature alloy material forging crack tendency, to solve Certainly the problems referred to above.

To achieve these goals, the technical solution used in the present invention is such that a kind of reduction high temperature alloy material The method of material forging crack tendency, comprises the following steps:

(1) first with the steel ingot that asbestos cloth wrapping is to be forged；

(2) steel ingot that step (1) bandages is heated, be incubated 10-16h at 1160 DEG C, make steel ingot Homogeneous temperature, then takes out；

(3) steel ingot that forging step (2) is taken out, forging 4-5 fire, the deformation amount controlling of every fire time is 15%-20%, makes steel billet；

(4) steel billet that step (3) is made, reheating in furnace 1180 DEG C, it is incubated 40-50h, then takes out；

(5) steel billet step (4) taken out, forges, and the deformation amount controlling of every fire time is 20%-25%, Until forging is become a useful person.

Present inventor is through experimental results demonstrate: owing to high-temperature alloy material forging range is less, The heat loss in forging process can be reduced with asbestos cloth wrapping；Further, since high-temperature alloy material usually can Laves phase occur, the existence of this phase has a strong impact on its Forging Plasticity, uses said method can dissolve part Laves phase so that it is Forging Plasticity significantly improves, thus its forging crack tendency is greatly reduced so that yield rate It is greatly improved, more than 60% can be reached.

As preferred technical scheme: in step (2), heating is carried out in bell furnace.

As preferred technical scheme: in step (2), during taking-up, use feeding car.

As preferred technical scheme: in step (3), 2000T quick forging machine is used to forge.

As preferred technical scheme: in step (3), the deflection of every fire time is 20%.

Compared with prior art, it is an advantage of the current invention that: use this method forging high-temperature alloy material, forging Making tearing tendency and have bigger improvement, the yield rate of forging is promoted to more than 60% by original about 20%, especially It is suitable for the forging of GH4049, it is possible to preferably forging is become a useful person, pays user and use.

Detailed description of the invention

Below in conjunction with embodiment, the invention will be further described.

Embodiment 1:

(1) first with the steel ingot that asbestos cloth wrapping is to be forged；

(2) steel ingot that step (1) bandages is heated in bell furnace, be incubated 10h, make steel ingot temperature Degree uniformly, then uses feeding car to take out；

(3) steel ingot that forging step (2) is taken out, forging 4-5 fire, the deformation amount controlling of every fire time is 15%, make steel billet；

(4) steel billet that step (3) is made, reheating in furnace 1180 DEG C, it is incubated 40h, then takes out；

(5) steel billet step (4) taken out, forges, and the deformation amount controlling of every fire time is 20%, directly Become a useful person to forging；

The yield rate of the present embodiment is 62%.

Embodiment 2:

(1) first with the steel ingot that asbestos cloth wrapping is to be forged；

(2) steel ingot that step (1) bandages is heated in bell furnace, be incubated 16h, make steel ingot temperature Degree uniformly, then uses feeding car to take out；

(3) steel ingot that forging step (2) is taken out, forging 4-5 fire, the deformation amount controlling of every fire time is 20%, make steel billet；

(4) steel billet that step (3) is made, reheating in furnace 1180 DEG C, it is incubated 50h, then takes out；

(5) steel billet step (4) taken out, forges, and the deformation amount controlling of every fire time is 25%, directly Become a useful person to forging；

The yield rate of the present embodiment is 68%.

Embodiment 3:

(1) first with the steel ingot that asbestos cloth wrapping is to be forged；

(2) steel ingot that step (1) bandages is heated in bell furnace, be incubated 15h, make steel ingot temperature Degree uniformly, then uses feeding car to take out；

(3) steel ingot that forging step (2) is taken out, forging 4-5 fire, the deformation amount controlling of every fire time is 18%, make steel billet；

(5) steel billet step (4) taken out, forges, and the deformation amount controlling of every fire time is 23%, directly Become a useful person to forging；

The yield rate of the present embodiment is 65%.

The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all in the present invention Spirit and principle within any amendment, equivalent and the improvement etc. made, should be included in the guarantor of the present invention Within the scope of protecting.

Claims

1. the method reducing high-temperature alloy material forging crack tendency, it is characterised in that Comprise the following steps:

(1) first with the steel ingot that asbestos cloth wrapping is to be forged；

(2) steel ingot that step (1) bandages is heated, is incubated 10-16h at 1160 DEG C, Make steel ingot homogeneous temperature, then take out；

(3) steel ingot that forging step (2) is taken out, forging 4-5 fire, the deformation of every fire time Amount controls to be 15%-20%, makes steel billet；

(4) steel billet that step (3) is made, reheating in furnace 1180 DEG C, it is incubated 40-50h, Then take out；

(5) steel billet step (4) taken out, forges, the deformation amount controlling of every fire time For 20%-25%, become a useful person until forging.

A kind of high-temperature alloy material forging crack that reduces the most according to claim 1 is inclined to Method, it is characterised in that: in step (2), heating carry out in bell furnace.

A kind of high-temperature alloy material forging crack that reduces the most according to claim 1 is inclined to Method, it is characterised in that: in step (2), during taking-up use feeding car.

A kind of high-temperature alloy material forging crack that reduces the most according to claim 1 is inclined to Method, it is characterised in that: in step (3), use 2000T quick forging machine forge.

The most according to claim 1 a kind of reduce high-temperature alloy material forging crack tendency Method, it is characterised in that: in step (3), the deflection of every fire time is 20%.