CN109807271A

CN109807271A - A kind of high-melting-point hafnium alloy forging rolling technique

Info

Publication number: CN109807271A
Application number: CN201711160100.0A
Authority: CN
Inventors: 张锐
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-11-20
Filing date: 2017-11-20
Publication date: 2019-05-28

Abstract

It is a kind of to be related to a kind of high-melting-point hafnium alloy forging rolling technique of hafnium alloy forging rolling technical field, the technique is as follows: hafnium alloy slab ingot is placed on to the position that tup is corresponded in forging mill by big manipulator, then tup forges and presses hafnium alloy slab ingot with the speed decline of 1min150~170mm, after a face of hafnium alloy slab ingot has been forged, hafnium alloy slab ingot is removed and is heated to 460 ± 10 DEG C, then it turns out again, another face of hafnium alloy slab ingot is forged and pressed, until the face has been forged；It repeats the above steps, until the thickness by hafnium alloy slab ingot forging rolling to needs；The technique can effectively improve the forging rolling yield rate of hafnium alloy slab ingot.

Description

A kind of high-melting-point hafnium alloy forging rolling technique

Technical field

The present invention relates to hafnium alloy forging rolling technical fields, more particularly, to a kind of forging applied to high-melting-point hafnium alloy slab ingot Roll process.

Background technique

It is well known, since hafnium alloy not only has good corrosion-resistant, room temperature mechanics and higher stretching and compression yield Fusing point, but also there is high-temperature instantaneous fusing point and good forming and welding performance, and use temperature≤150 DEG C, therefore, lead to It is usually used in making aircraft skin, hatch door, siding, stringer, the rocker arm of operating system, support, guided missile covering and aerospace structural member etc.； But in practical applications, due to needing to improve the density and fusing point of hafnium alloy by forging rolling, and it is mostly the process of forging rolling Carry out decision by the personal experience of Field Force, therefore, the forging rolling yield rate of existing high-melting-point hafnium alloy slab ingot is very low.

Summary of the invention

In order to overcome the shortcomings in the background art, described the invention discloses a kind of high-melting-point hafnium alloy forging rolling technique Technique can effectively improve the forging rolling yield rate of hafnium alloy slab ingot.

For achieving the above object, the present invention adopts the following technical scheme:

A kind of high-melting-point hafnium alloy forging rolling technique, the processing step are as follows:

(1) high-melting-point steel plate matched with the size of hafnium alloy slab ingot, weight is lived by a big manipulator clamping, and by one Deblocking temperature is that 1000 DEG C of steel ingot is placed on steel plate folded by big manipulator, is then put high temperature steel ingot to forging using big manipulator Below the tup of milling train, at this point, corresponding drop to above high temperature steel ingot of tup is preheated；When the temperature of tup reaches 300 DEG C When, rise tup, while quickly removing big manipulator, and high temperature steel ingot is quickly removed；

(2) the hafnium alloy slab ingot after being heated up by a gadget hand handle moves on on the steel plate of big manipulator, it is desirable that hafnium alloy The upper and lower surface of slab ingot makes of carbon dust to be lubricated, while requiring to place hafnium alloy slab ingot at once when removing high temperature steel ingot；

(3) face forging and stamping of hafnium alloy slab ingot finish, and are heated to 460 ± 10 DEG C after hafnium alloy slab ingot is removed, then It turns out again, another face of hafnium alloy slab ingot is forged and pressed, until the face has been forged；

Forging rolling hafnium alloy slab ingot of the present invention it is simple for process, be convenient for enforcement of regulations, using the technique Forging rolling high-melting-point hafnium alloy slab ingot is not only able to effectively improve forging rolling yield rate, but also can be due to the raising of yield rate The corresponding cost for reducing high-melting-point hafnium alloy, and then achieved the purpose that increase high-melting-point hafnium alloy occupation rate of market.

Specific embodiment

The present invention can be explained in more detail by the following examples, the open purpose of the present invention is intended to protect the present invention All changes and improvements in range, the invention is not limited to the following examples:

The processing step of forging rolling hafnium alloy slab ingot of the present invention is as follows:

(1) forging mill for selecting 7000 tons is lived mating with size, the weight of hafnium alloy slab ingot by a big manipulator clamping High-melting-point steel plate, and be that 1000 DEG C of steel ingot is placed on steel plate folded by big manipulator by a deblocking temperature, then utilize big machine Tool hand puts high temperature steel ingot to the tup of forging mill, at this point, corresponding drop to above high temperature steel ingot of tup is preheated；When When the temperature of tup reaches 300 DEG C, rise tup, while quickly removing big manipulator, and high temperature steel ingot is quickly removed；

(2) the hafnium alloy slab ingot after being heated up by a gadget hand handle moves on on the steel plate of big manipulator, as needed, The upper side of hafnium alloy slab ingot places heat preservation asbestos cloth, too fast to prevent its temperature from declining；Furthermore, it is desirable that hafnium alloy slab ingot Upper and lower surface makes of carbon dust to be lubricated, while requiring to place hafnium alloy slab ingot at once when removing high temperature steel ingot；Move on the steel plate Inaccurate having time is poor when walking high temperature steel ingot and placing hafnium alloy slab ingot；

(3) face forging and stamping of hafnium alloy slab ingot finish, and hafnium alloy slab ingot are first heated to 460 ± 10 DEG C, then again It turns out, another face of hafnium alloy slab ingot is forged and pressed, until this face of hafnium alloy slab ingot has also been forged；

Implement to need to pay attention to when the technique of the forging rolling hafnium alloy slab ingot:

(1) in forging rolling, a face of hafnium alloy slab ingot is once merely able to forging rolling together, i.e., cannot continuous forging rolling it is same Twice, when a face forging rolling is one complete, together, if heating a forging rolling two, how flat hafnium close the forging rolling that turn out again in face Ingot is easy for cracking, this is because the crystal size of hafnium alloy slab ingot the inside after forging together is different, which is easy to crack Mixed crystal, therefore cannot be to a Mian Duan bis- of hafnium alloy slab ingot；There are one the reason is that at a temperature of hafnium alloy slab ingot Drop is very fast, is easy for cracking when at a temperature below 380 DEG C；It is complete first of forging rolling, anti-a to forging when hafnium alloy forging heats Face reheats, because forging obtains forging rolling on the other surface when forging second.

(2) tup of forging mill used in is a U-shaped, i.e., using the arc edge of tup come the conjunction of effective guarantee hafnium Golden slab ingot can have certain mobility in forging rolling；

(3) the primary forging rolling amount of forging mill should be the 25~29% of hafnium alloy slab ingot thickness, and certain it is noted that being every time It is no forging thoroughly because once forge it is impermeable if, be easy for cracking in lower road forging rolling.

Part not in the detailed description of the invention is the prior art, therefore the present invention is not described in detail.

Claims

1. a kind of high-melting-point hafnium alloy forging rolling technique, it is characterized in that: the processing step is as follows:

(1) high-melting-point steel plate matched with the size of hafnium alloy slab ingot, weight is lived by a big manipulator clamping, and by one piece of temperature Degree is placed on steel plate folded by big manipulator for 1000 DEG C of steel ingot, is then put high temperature steel ingot to forging mill using big manipulator Tup below, at this point, corresponding drop to above high temperature steel ingot of tup is preheated；When the temperature of tup reaches 300 DEG C, on Tup is risen, while quickly removing big manipulator, and high temperature steel ingot is quickly removed；

(2) the hafnium alloy slab ingot after being heated up by a gadget hand handle moves on on the steel plate of big manipulator, it is desirable that hafnium alloy slab ingot Upper and lower surface make and lubricate of carbon dust, while requiring to place hafnium alloy slab ingot at once when removing high temperature steel ingot；

(3) face forging and stamping of hafnium alloy slab ingot finish, and are heated to 460 ± 10 DEG C after hafnium alloy slab ingot is removed, then turn over again Another face of hafnium alloy slab ingot is forged and pressed in a face, until the face has been forged.