CN105344903A - Forging method for producing block large forged pieces - Google Patents

Abstract

The invention provides a forging method for block large forged pieces. According to the forging method, two forging presses are matched with two sets of forging tools, wherein the first press is used for forging, pressing square cast ingot and finally flattening; and the second press is used for widening and drawing out. By forging through the two presses, heating numbers are reduced and energy resources are saved. The forging method provided by the method is simple to operate, and production efficiency and a product qualification ratio can be greatly improved.

Description

A kind of forging method producing the large forgings of block class

Technical field

The present invention relates to and produce block class large-scale aluminium alloy forgings technical field, particularly relate to a kind of forging method producing the large forgings of block class.

Background technology

At present, the raw material producing aluminum alloy forge piece employing is round ingot casting, by circle ingot casting to the larger deflection of block forging product needed, obvious stagnant zone and yielding district can be produced during jumping-up circle ingot casting, cause the inhomogeneities of structure property, in many ways forged to the employing of block forging product needed by circle ingot casting meanwhile, and in many ways forge the metallurgical imperfection easily amplifying ingot casting, cause product to detect a flaw defective.Therefore, how to improve the method for producing the large forgings of block class, improve product percent of pass and become those skilled in the art's technical problem urgently to be resolved hurrily.

Summary of the invention

In view of this, the invention provides a kind of forging method producing the large forgings of block class, this forging method is simple to operate, can enhance productivity and improve product percent of pass.

In order to achieve the above object, the invention provides following technical scheme:

Produce a forging method for block class large forgings, comprising:

Steps A, heat square ingot casting to forging temperature, described square ingot casting is length L0, width T0, height S0, the first hydraulic press is adopted to carry out beating side to described square ingot casting, the length of described square ingot casting is machined to L1, width is machined to T1, further processing is to S1, and L1 is less than L0, T1 is less than 1.5 times ~ 1.8 times that T0, S1 are L1, the described side of beating makes six final surfaces be plane for also flattening the surface of heaving with the described square ingot casting surface of the flat anvil pressure of described first hydraulic press;

Step B, along height S1 direction jumping-up, height S1 is machined to S2, and S1 is 1.2 times ~ 1.5 times of S2;

Step C, adopts the second hydraulic press to carry out broadening, pulling to described square ingot casting, obtains the large forgings of block class, and described broadening is make width dimensions become large with the pulling anvil of described second hydraulic press, and described pulling becomes large for making length dimension with pulling anvil.

Preferably, in above-mentioned forging method, also comprise after step C:

Step D, described first hydraulic press carries out leveling to described piece of class large forgings, and described leveling is heave with the local of flat anvil applanation surface.

Forging method provided by the invention adopts square ingot casting as raw material, can be avoided adopting and in many ways forges, therefore by square ingot casting to the less deflection of block forging product needed, this forging method is simple to operate, in forging process, square ingot casting distortion evenly, makes product obtain good structure property, and, the present invention utilizes two hydraulic presses to forge continuously, without the need to changing anvil in forging process, can save time, raw material temperature drop is little simultaneously, can reduce and add showing tremendous enthusiasm time, economize energy.In sum, forging method provided by the invention is simple to operate, can enhance productivity and improve product percent of pass.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.

Fig. 1 is a kind of flow chart producing the forging method of block class large forgings that the embodiment of the present invention one provides;

Fig. 2 is a kind of flow chart producing the forging method of block class large forgings that the embodiment of the present invention two provides.

Detailed description of the invention

For the ease of understanding, below in conjunction with accompanying drawing, the invention will be further described.

See Fig. 1, be a kind of flow chart producing the forging method of block class large forgings that the embodiment of the present invention one provides, specifically comprise:

Step S11, heat square ingot casting to forging temperature, square ingot casting is length L0, width T0, height S0, the first hydraulic press square shaped ingot casting is adopted to carry out beating side, the length of square ingot casting is machined to L1, width is machined to T1, further processing is to S1, and L1 is less than L0, T1 is less than 1.5 times ~ 1.8 times that T0, S1 are L1, the side of beating is the surface of pressing square ingot casting surface also to flatten to heave with the flat anvil of the first hydraulic press and make six final surfaces be plane.

Step S12, along height S1 direction jumping-up, height S1 is machined to S2, and S1 is 1.2 times ~ 1.5 times of S2.

Step S13, adopts the second hydraulic press square shaped ingot casting to carry out broadening, pulling, obtains the large forgings of block class, and broadening is make width dimensions become large with the pulling anvil of the second hydraulic press, pulls out as making length dimension become large with pulling anvil.

Flat anvil is the anvil tool that anvil face is greater than raw material cross section, and pulling anvil is the anvil tool with long and narrow anvil face, and anvil face relative raw material cross section is less.

Forging method provided by the invention adopts square ingot casting as raw material, can be avoided adopting and in many ways forges, therefore by square ingot casting to the less deflection of block forging product needed, this forging method is simple to operate, in forging process, square ingot casting distortion evenly, makes product obtain good structure property, and, the present invention utilizes two hydraulic presses to forge continuously, without the need to changing anvil in forging process, can save time, raw material temperature drop is little simultaneously, can reduce and add showing tremendous enthusiasm time, economize energy.In sum, forging method provided by the invention is simple to operate, can enhance productivity and improve product percent of pass.

See Fig. 2, be a kind of flow chart producing the forging method of block class large forgings that the embodiment of the present invention two provides, specifically comprise step S21 ~ step S24, wherein, step S21 ~ step 23 is identical with the step S11 in embodiment one ~ S13, repeats no more.

Step S24 is to make the large forgings of block class obtain better surface quality, is specially:

Step S24, the first hydraulic press carries out leveling to the large forgings of block class, and leveling is heave with the local of flat anvil applanation surface.

To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of embodiment, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to embodiment illustrated herein, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

Claims (2)

1. produce a forging method for block class large forgings, it is characterized in that, comprising:

Steps A, heat square ingot casting to forging temperature, described square ingot casting is length L0, width T0, height S0, the first hydraulic press is adopted to carry out beating side to described square ingot casting, the length of described square ingot casting is machined to L1, width is machined to T1, further processing is to S1, and L1 is less than L0, T1 is less than 1.5 times ~ 1.8 times that T0, S1 are L1, the described side of beating makes six final surfaces be plane for also flattening the surface of heaving with the described square ingot casting surface of the flat anvil pressure of described first hydraulic press;

Step B, along height S1 direction jumping-up, height S1 is machined to S2, and S1 is 1.2 times ~ 1.5 times of S2;

Step C, adopts the second hydraulic press to carry out broadening, pulling to described square ingot casting, obtains the large forgings of block class, and described broadening is make width dimensions become large with the pulling anvil of described second hydraulic press, and described pulling becomes large for making length dimension with pulling anvil.

2. forging method according to claim 1, is characterized in that, also comprises after step C:

Step D, described first hydraulic press carries out leveling to described piece of class large forgings, and described leveling is heave with the local of flat anvil applanation surface.