CN104148560A

CN104148560A - Airtight forging method for aluminum alloy forge piece

Info

Publication number: CN104148560A
Application number: CN201410319943.0A
Authority: CN
Inventors: 万东海; 张令; 冉熊波; 杜力军; 罗太亚
Original assignee: Guizhou Aerospace Xinli Casting and Forging Co Ltd
Current assignee: Guizhou Aerospace Xinli Casting and Forging Co Ltd
Priority date: 2014-07-07
Filing date: 2014-07-07
Publication date: 2014-11-19

Abstract

The invention discloses an airtight forging method for an aluminum alloy forge piece. The method mainly includes the steps that according to the shape of the forge piece, a die comprising an upper die body and a lower die body is designed, the shape of a cavity formed after the upper die body and the lower die body are combined and closed is the same as that of the forge piece, aluminum alloy raw materials are heated to reach 450 DEG C, a blank is manufactured by means of stamping equipment according to the shape and the size of the forge piece, the upper die body and the lower die body are preheated to reach 250-260 DEG C and are coated with release agents, the blank is heated to reach 450+/-10 DEG C and then is placed in lower die body, the upper die body is pressed downwards so that the blank is deformed, after the upper die body and the lower die body are combined and closed, the upper die body is lifted, and the forge piece is taken out to be cooled in air. According to the method, the aluminum alloy forge piece is forged through the closed-type die, no flash exists after the forge piece is forged, loss of raw materials can be reduced, the number of flash cutting procedures is reduced, and machining efficiency is improved.

Description

The airtight forging method of aluminum alloy forge piece

Technical field

The invention belongs to forging processing technique field, particularly the forging method of aluminium alloy.

Background technology

The alloy general name of aluminium alloy taking aluminium as base, main alloy element has copper, silicon, magnesium, zinc, manganese, less important alloying element has nickel, iron, titanium, chromium, lithium etc., aluminium alloy density is low, but strength ratio is higher, approach or exceed high-quality steel, plasticity is good, can be processed into various section bars, there is good electric conductivity, thermal conductivity and corrosion stability, industrial being widely used, use amount is only second to steel, at present for aluminum alloy forge piece in batches, adopt open die forging always, the forging flash that profit is processed is in this way more, cost consumption is large, and when processing overlap, cause machined waste in man-hour, production efficiency is low.

Summary of the invention

The object of the invention is the problem existing in order to overcome existing forging method, the airtight forging method of aluminum alloy forge piece is provided.

Technical scheme of the present invention is:

The airtight forging method of aluminum alloy forge piece, mainly comprises the steps:

A, according to the shape of forging, designing mould comprises patrix and counterdie two parts, patrix is identical with forging shape with the cavity shape of counterdie closure;

B, aluminium alloy stock is heated to 450 DEG C, according to the shape and size of forging, adopts pressing equipment to produce blank;

C, upper die and lower die are preheated to 250 DEG C～260 DEG C, and smearing release agent;

After D, blank heating to 450 ± 10 DEG C, put into counterdie, utilize patrix to pressing down and make blank deformation, after patrix and counterdie closure, patrix is mentioned, take out forging cooling in air.

Beneficial effect of the present invention and advantage are:

Method of the present invention has adopted closed molds reflectal forging, and non-trimming after forging process for fuel can reduce raw material loss, reduces and cuts overlap operation, improves machined efficiency.

Brief description of the drawings

Fig. 1 is that in the present invention, forging is annular element structural representation;

Fig. 2 is the upper die structure schematic diagram of making according to forging shown in Fig. 1;

Fig. 3 is the lower die structure schematic diagram of making according to forging shown in Fig. 1;

Fig. 4 is the blank schematic diagram of making according to forging shown in Fig. 1;

Fig. 5 is the closed schematic diagram of the mould while utilizing forging shown in mould forging drawing 1 shown in Fig. 2, Fig. 3;

Fig. 6 is that in the present invention, forging is pie part structural representation;

Fig. 7 is the upper die structure schematic diagram of making according to forging shown in Fig. 6;

Fig. 8 is the lower die structure schematic diagram of making according to forging shown in Fig. 6;

Fig. 9 is the blank schematic diagram of making according to forging shown in Fig. 6;

Figure 10 is the closed schematic diagram of the mould while utilizing forging shown in mould forging drawing 6 shown in Fig. 7, Fig. 8;

In figure: 1-forging, 2-patrix, 3-counterdie, 4-blank.

Detailed description of the invention

Below in conjunction with accompanying drawing, the present invention is elaborated:

Embodiment mono-

As shown in Figures 1 to 5, a kind of airtight forging method of 2A12 aluminum alloy ring shape Forging, mainly comprises the steps:

A, according to the shape of forging 1, designing mould comprises patrix 2 and counterdie 3 two parts, patrix 2 is identical with forging 1 shape with the cavity shape of counterdie 3 closures;

B, aluminium alloy stock is heated to 450 DEG C, according to the shape and size of forging 1, adopts pressing equipment to produce blank 4;

C, patrix 2, counterdie 3 are preheated to 255 DEG C～260 DEG C, and smearing release agent;

D, blank 4 are heated to, after 450 ± 10 DEG C, put into counterdie 3, utilize patrix 2 to pressing down and make blank 4 to be out of shape, and after patrix 2 and counterdie 3 closures, patrix 2 are mentioned, and final forging temperature control is 350 ± 10 DEG C, take out forging 1 cooling in air.

Forging 1 non-trimming after adopting this method to forge, can reduce raw material loss, reduces and cuts overlap operation, improve machined efficiency, the first forging temperature of forging 1 is with to forge most temperature contrast little, crystalline phase even tissue, the each position of forging 1 mechanical performance difference is little, and product percent of pass is high.

Embodiment bis-

As shown in Figures 1 to 5, a kind of airtight forging method of 2A14 aluminum alloy ring shape Forging, mainly comprises the steps:

D, blank 4 are heated to, after 450 ± 10 DEG C, put into counterdie 3, utilize patrix 2 to pressing down and make blank 4 to be out of shape, and after patrix 2 and counterdie 3 closures, patrix 2 are mentioned, and final forging temperature control is 300 ± 10 DEG C, take out forging 1 cooling in air.

Embodiment tri-

As shown in Fig. 6 to Figure 10, a kind of airtight forging method of 2A12 aluminium alloy pie forging, mainly comprises the steps:

Embodiment tetra-

As shown in Fig. 6 to Figure 10, a kind of airtight forging method of 2A14 aluminium alloy pie forging, mainly comprises the steps:

Claims

1. an airtight forging method for aluminum alloy forge piece, is characterized in that mainly comprising the steps:

A, according to the shape of forging (1), designing mould comprises patrix (2) and counterdie (3) two parts, the cavity shape that patrix (2) and counterdie (3) are closed is identical with forging (1) shape;

B, aluminium alloy stock is heated to 450 DEG C, according to the shape and size of forging (1), adopts pressing equipment to produce blank (4);

C, patrix (2), counterdie (3) are preheated to 250 DEG C～260 DEG C, and smearing release agent;

D, blank (4) are heated to after 450 ± 10 DEG C, put into counterdie (3), utilize patrix (2) to pressing down and make blank (4) distortion, after patrix (2) and counterdie (3) closure, patrix (2) is mentioned, take out forging (1) cooling in air.

2. the airtight forging method of a kind of aluminum alloy forge piece according to claim 1, is characterized in that described forging (1) is shaped as ring-type or pie.

3. the airtight forging method of a kind of aluminum alloy forge piece according to claim 1 and 2, is characterized in that described forging (1) is 2A12 aluminium alloy, and final forging temperature is 350 ± 10 DEG C.

4. the airtight forging method of a kind of aluminum alloy forge piece according to claim 1 and 2, is characterized in that described forging (1) is 2A14 aluminium alloy, and final forging temperature is 300 ± 10 DEG C.