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Manufacturing method of metal spinning part

A technology of metal spinning and manufacturing methods, applied in the field of mechanical processing, can solve the problems of large tensile stress on the outer surface, serious cold hardening of materials, and large deformation of parts, so as to improve tensile strength and elongation, and eliminate cold Effect of hardening and grain refinement

Active Publication Date: 2019-11-08
SICHUAN AEROSPACE LONG MARCH EQUIP MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the spinning forming process, the blank undergoes a large spinning deformation, the outer surface of the product is subjected to a large tensile stress, the deformation of the part is extremely large, and the material is hardened by cold work. In addition, the stress release during the spinning process makes the inner and outer parts of the product There are dense cracks on the surface. Once a large number of cracks or cracks expand and crack, the product will be scrapped directly

Method used

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  • Manufacturing method of metal spinning part
  • Manufacturing method of metal spinning part
  • Manufacturing method of metal spinning part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment provides a method for manufacturing a metal spinning part, comprising the following steps:

[0030] Step 1: Use a hydraulic press to pre-stretch the O-state LD10 aluminum alloy sheet into a rod-shaped blank, and set the pressure value of the hydraulic press to 20MPa;

[0031] Step 2: After the blank is coated with lubricant, it is placed on the inter-roll spinning machine for the first spinning, the spindle speed is 20r / min, the spindle pump pressure is 10MPa, and then complete annealing treatment: first raise the temperature to 300°C, Insulate for 3 hours, then cool down with the furnace to obtain a processed product;

[0032] Step 3: Coat the primary treatment product with lubricant and place it on the inter-roll spinning machine for the second pass spinning, the spindle speed is 10r / min, and the spindle pump pressure is 15MPa; then carry out incomplete annealing treatment: first raise the temperature to 350°C, hold for 1 hour, cool down at a rate of ...

Embodiment 2

[0036] This embodiment provides a method for manufacturing a metal spinning part, comprising the following steps:

[0037] Step 1: Use a hydraulic press to pre-stretch the O-state LD10 aluminum alloy sheet into a rod-shaped blank, and set the pressure value of the hydraulic press to 20MPa;

[0038] Step 2: After the blank is coated with lubricant, it is placed on the inter-roll spinning machine for the first spinning, the spindle speed is 10r / min, the spindle pump pressure is 20MPa, and then complete annealing treatment: first raise the temperature to 320°C, Insulate for 3 hours, then cool down with the furnace to obtain a processed product;

[0039] Step 3: Coat the primary treatment product with lubricant and place it on the inter-roll spinning machine for the second spinning, the spindle speed is 5r / min, the spindle pump pressure is 30MPa; first perform incomplete annealing treatment, and heat up to 370 ℃, keep warm for 1h, then lower the temperature at a rate of 50°C / h, t...

Embodiment 3

[0043] This embodiment provides a method for manufacturing a metal spinning part, comprising the following steps:

[0044] Step 1: Use a hydraulic press to pre-stretch the O-state LD10 aluminum alloy sheet into a rod-shaped blank, and set the pressure value of the hydraulic press to 20MPa;

[0045] Step 2: After the blank is coated with lubricant, it is placed on the inter-roller spinning machine for the first spinning, the spindle speed is r / min, the spindle pump pressure is 20MPa, and then complete annealing treatment: first raise the temperature to 250°C, Keep warm for 8 hours, then cool down with the furnace to obtain a primary treatment product;

[0046] Step 3: Apply lubricant to the primary treatment product and place it on the inter-roller spinning machine for the second pass spinning, the spindle speed is 10r / min, the spindle pump pressure is 20MPa; first perform incomplete annealing treatment, and heat up to 250 ℃, keep warm for 10h, then lower the temperature at a ...

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Abstract

The invention provides a manufacturing method of a metal spinning part. The manufacturing method of metal spinning parts comprises the following steps of 1, prestretching a metal raw material into a pie blank; 2, conducting first-pass spinning on the blank and then conducting complete annealing treatment on the blank to obtain a primary treated product; 3, conducting second-pass spinning on the primary treated product and then conducting incomplete annealing and quenching treatment to obtain a secondary treated product; and 4, conducting third-pass spinning on the secondary treated product andthen conducting quenching and aging treatment to obtain the metal spinning part. Through the manufacturing method, the crack sensitive rate of products can be eliminated or substantially reduced; thephenomena of surface cracking of spinning products manufactured through the method can be reduced by 90% or more; and the situation that the products are subjected to cold hardening in the spinning process badly, the crack depth of the outer surface of the spinning part is increased and the spinning part gets cracked and is scrapped is avoided.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a process suitable for eliminating or greatly reducing surface cracks of metal spinning parts. Background technique [0002] In the fields of national defense, aviation and aerospace, a large number of LD10 aluminum alloy sheets are used to manufacture important structural products. As an important structural part of a certain type, the head sheet metal parts are made of LD10 aluminum alloy sheets. The blank is processed into a head part. During the spinning forming process, the blank undergoes a large spinning deformation, the outer surface of the product is subjected to a large tensile stress, the deformation of the part is extremely large, and the material is hardened by cold work. In addition, the stress release during the spinning process makes the inner and outer parts of the product Intensive cracks appear on the surface. Once a large number of c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/04
CPCC22F1/002C22F1/04
Inventor 陶明清王子立王春林王凤婷田晔许璐迪
Owner SICHUAN AEROSPACE LONG MARCH EQUIP MFG CO LTD
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