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Punching method of low-plasticity high-silicon aluminum alloy strip

A high-silicon aluminum alloy and low plasticity technology, which is applied in the field of mechanical processing, can solve the problems of reducing the service life of punching dies, wearing the edge of punching dies, increasing punching costs, etc., to reduce strength, strengthen hydrostatic pressure, prevent The effect of cross-sectional cracks

Inactive Publication Date: 2018-06-29
有研科技集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Before the high-silicon aluminum alloy strip is applied to a key part of the car, it needs to be punched to facilitate assembly on the car; due to the high strength and low plasticity of the high-silicon aluminum alloy, the existing cold The punching method will cause wear on the cutting edge of the punching die, and the punching quality is low, thereby reducing the service life of the punching die, increasing the punching cost, and reducing the punching efficiency

Method used

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  • Punching method of low-plasticity high-silicon aluminum alloy strip
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  • Punching method of low-plasticity high-silicon aluminum alloy strip

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Punching the high-silicon aluminum alloy strip with chemical composition Si 19wt%, Cu 4wt%, Fe 5.5wt%, Mg 1.5wt%, and the balance being Al, the specific process includes the following steps:

[0026] (1) Take a high-silicon aluminum alloy strip with a thickness t of 4.2mm and heat it to 320°C;

[0027] (2) Put the heated high-silicon aluminum alloy strip in the guide groove 3 of the punching die, guide and position the strip, and fix it with a pressing head, start the press, and set the punching die 2 and punch 1 Under the action of the cutting edge, the high silicon aluminum alloy strip is punched and blanked; the depth of the punching die guide groove 3 is 3.8mm, the gap between the die 2 and the punch 1 is 0.05mm, and the punching die blade The bottom of the mouth has small rounded corners, and the rounded corner radius r is 0.2mm;

[0028] The cross-sectional effect diagram of the high silicon aluminum alloy strip obtained by the above punching method is as follows image...

Embodiment 2

[0030] Punching the high silicon aluminum alloy strip with chemical composition Si 16.8wt%, Cu 4.3wt%, Fe 5wt%, Mg 1.4wt%, and the balance being Al, the specific process includes the following steps:

[0031] (1) Take a high-silicon aluminum alloy strip with a thickness t of 5.5mm and heat it to 330°C;

[0032] (2) Put the heated high-silicon aluminum alloy strip in the guide groove of the punching die, guide and position the strip, and fix it with a pressing head, start the press, and set the punching die 2 and punch 1 Under the action of the cutting edge, the high silicon aluminum alloy strip is punched and blanked; the depth of the guiding groove 3 of the punching die is 5.3mm, the gap between the die 2 and the punch 1 is 0.07mm, and the cutting edge of the die The bottom is small rounded corners, and the rounded corner radius r is 0.5mm;

[0033] The cross-sectional effect diagram of the high silicon aluminum alloy strip obtained by the above punching method is as follows image...

Embodiment 3

[0035] Punching a high-silicon aluminum alloy strip with chemical composition Si 18wt%, Cu 3.5wt%, Fe 5wt%, Mg 1wt%, and the balance being Al, the specific process includes the following steps:

[0036] (1) Take a high-silicon aluminum alloy strip with a thickness t of 5mm and heat it to 300°C;

[0037] (2) Put the heated high-silicon aluminum alloy strip in the guide groove 3 of the punching die, guide and position the strip, and fix it with a pressing head, start the press, and set the punching die 2 and punch 1 Under the action of the cutting edge, the high-silicon aluminum alloy strip is punched and blanked; the depth of the punching die guide groove 3 is 4.4mm, the gap between the die 2 and the punch 1 is 0.06mm, and the punching die blade The bottom of the mouth is a small rounded corner, and the rounded corner radius r is 0.3mm;

[0038] The cross-sectional effect diagram of the high silicon aluminum alloy strip obtained by the above punching method is as follows image 3 As...

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Abstract

The invention belongs to the technical field of machining, and particularly relates to a punching method of a low-plasticity high-silicon aluminum alloy strip. The punching method includes the steps:heating the high-silicon aluminum alloy strip to reach the temperature of 200-350 DEG C, and punching the heated high-silicon aluminum alloy strip; designing the depth of a punching die guide groove to account for 30%-70% of the thickness t of the high-silicon aluminum alloy strip, designing the gap between a punched female die and a punched male die to be 12-15% t, and designing the bottom of a punched die cutting edge into a round angle with the radius r of 0.2-0.5mm. By the punching method, punching effect with high-accuracy cross section quality can be acquired, punching efficiency is improved, the service life of a punching die is prolonged, and production cost is reduced.

Description

Technical field [0001] The invention belongs to the technical field of mechanical processing, and particularly relates to a punching method of a low-plasticity high-silicon aluminum alloy strip. Background technique [0002] Automobile materials have a great impact on the quality of automobiles. Among them, the lightweight of automobile key parts and components has a significant effect on improving the efficiency of engines and compressors, reducing automobile weight, driving resistance, reducing fuel consumption, exhaust emissions and noise. There are broad application prospects in the field of automobile manufacturing. [0003] High-silicon aluminum alloy materials have the characteristics of low weight, high corrosion resistance, and low thermal expansion. At the end of the 20th century, they began to attract people’s attention abroad and were used in the manufacture of key automobile parts, such as automobile engine pistons, connecting rods, and air conditioning compression Mo...

Claims

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Application Information

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IPC IPC(8): B21D28/02B21D28/14B21D37/16
CPCB21D28/02B21D28/14B21D37/16
Inventor 邬小萍
Owner 有研科技集团有限公司
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