Plastic forming method for large and complex special-shaped structural parts

A plastic forming and cavity technology, which is applied in metal processing equipment, metal extrusion dies, etc., can solve the problems of high difficulty of pre-forming, increase in process and cost, solve the problem of filling, improve plastic fluidity, and can be operated strong effect

Active Publication Date: 2022-07-22
NO 59 RES INST OF CHINA ORDNANCE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, preforming increases the process and cost, and the difficulty of preforming itself is high, especially for large and complex special-shaped structural parts, how to design a mold suitable for the target component is a major difficulty

Method used

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  • Plastic forming method for large and complex special-shaped structural parts
  • Plastic forming method for large and complex special-shaped structural parts
  • Plastic forming method for large and complex special-shaped structural parts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A plastic forming method for non-proportional pressure loading of a PG-1 crankshaft reciprocating ejector die, the specific steps are as follows:

[0035] Step 1, cutting

[0036] Step 1, cutting

[0037] Will The 34CrNiMo6 steel bar saw cut as of blanks.

[0038] Step 2. Heating

[0039] The billet completed in the first step is heated to the initial forging temperature of 1100°C in a gas furnace.

[0040] Step 3, mold heating

[0041] The use of induction heating equipment will figure 1 The upper and lower dies of the follower cavity shown are heated to 400°C and held for 30 minutes;

[0042] Step four, feeding

[0043] Put the heated billet in step 2 into the figure 1 In the cavity of the follow-up cavity shown, the follow-up cavity includes an upper punch 1, an upper die 2, a cavity 3, a lower die 4 and a lower punch 5 arranged in sequence along the vertical direction;

[0044] Step 5. Clamp the mold

[0045] After the fourth step is completed, the mold...

Embodiment 2

[0085] A plastic forming method for non-proportional pressure loading of a reciprocating ejector die of a 7A04 aluminum alloy support body, the specific steps are as follows:

[0086] Step 1, cutting

[0087] Will The 7A04 aluminum alloy bar saw cut as of blanks.

[0088] Step 2. Heating

[0089] The billet completed in the first step is heated to the initial forging temperature of 430°C in a gas furnace.

[0090] Step 3, mold heating

[0091] The use of induction heating equipment will figure 1 The upper and lower dies of the follower cavity shown are heated to 400°C and held for 30 minutes;

[0092] Step four, feeding

[0093] Put the heated billet in step 2 into the figure 1 In the cavity 3 of the follower cavity shown, the follower cavity includes an upper punch 1, an upper die 2, a cavity 3, a lower die 4 and a lower punch 5, which are arranged in sequence along the vertical direction;

[0094] Step 5. Clamp the mold

[0095] After the fourth step is completed...

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PUM

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Abstract

The invention belongs to the technical field of manufacturing specific metal articles, and in particular relates to a plastic forming method for large and complex special-shaped structural parts. The plastic forming method sequentially includes blanking, billet heating, loading, mold clamping and reciprocating ejection extrusion processes. In the cavity, the follow-up cavity includes an upper punch, an upper die, a cavity, a lower die and a lower punch which are arranged in sequence. The method of the invention can overcome the problem of low die life of complex components during extrusion, can significantly improve the plastic fluidity of large complex special-shaped components, and solve the problem of filling complex components.

Description

technical field [0001] The invention belongs to the technical field of manufacturing specific metal articles, and in particular relates to a plastic forming method for large and complex special-shaped structural parts. Background technique [0002] Large and complex special-shaped structural parts are one of the commonly used parts in engineering. They are widely used in various load-bearing structures, with high performance requirements and difficult processing. [0003] At present, the traditional manufacturing process of large and complex special-shaped components is machining after die forging. However, the shape of large and complex special-shaped components is complex, and it is often necessary to design multiple blanking processes, resulting in large machining allowance and serious cutting of metal streamlines; in addition, the forming force is large, the forming temperature is high, and the mold is under poor load conditions, resulting in the life of the mold. extre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C23/18B21C25/02B21C29/04B21J1/06B21J5/02
CPCB21C23/18B21C25/02B21C29/04B21J5/02B21J1/06
Inventor 康凤陈文赵祖德林军夏祥生陈驰舒大禹黄树海
Owner NO 59 RES INST OF CHINA ORDNANCE IND
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