Process for production of aluminum alloy formings, aluminum alloy formings and production system

A manufacturing method and technology for aluminum alloys, applied in metal processing equipment, machines/engines, mechanical equipment, etc., can solve the problem of lack of research on mechanical properties, improve high-temperature fatigue strength, improve fatigue strength characteristics, suppress primary Si the effect of

Inactive Publication Date: 2009-09-02
SHOWA DENKO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in Patent Document 1, there is no study on the mechanical properties at high temperature.

Method used

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  • Process for production of aluminum alloy formings, aluminum alloy formings and production system
  • Process for production of aluminum alloy formings, aluminum alloy formings and production system
  • Process for production of aluminum alloy formings, aluminum alloy formings and production system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～16

[0144] 〔Manufacturing conditions〕

[0145] Using the production system shown in FIG. 1 , aluminum alloy molded products of Examples 1 to 16 shown in Table 1 and Comparative Examples 1 to 10 shown in Table 2 were produced.

[0146]

[0147]

[0148] As the continuous casting device 81 constituting this production system, using the hot top continuous casting machine shown in FIG. 85Φ (mm) continuous casting round bar of 10 aluminum alloy. The above-mentioned hot top continuous casting machine is a casting machine using a gas pressurized hot top casting method, and is configured to introduce gas and lubricating oil into the gap between the end plate and the mold so that the pressure of the molten alloy supplied to the mold and the lubricating oil and The gas formed by the vaporization of lubricating oil is well balanced. According to this configuration, the area where the molten aluminum comes into contact with the casting mold becomes narrow, so that the molten alloy can...

Embodiment 17、18

[0173] 〔Manufacturing conditions〕

[0174] Examples 17 and 18 and Comparative Examples 11 and 12 were produced by the same production method as in Examples 1 to 16 and Comparative Examples 1 to 10 under the compositions and production conditions shown in Table 5, respectively. In addition, Comparative Example 13 was produced by the same production method as Comparative Examples 11 and 12 except that it was formed from a powdered squeeze-cast material, and was not formed from a continuous casting round bar of aluminum alloy, and was not subjected to homogenization treatment. Examples 17, 18, and Comparative Examples 11 to 13, as shown in Fig. 7 (a) to (c), are formed into aluminum alloy molded products having the shape of a piston 1 having a crown surface 10 having a diameter of 80 mm and a thickness of 8 mm. .

[0175] 〔Fatigue Strength Evaluation〕

[0176] About Examples 17 and 18 and Comparative Examples 11-13, the fatigue strength was evaluated by the following method.

...

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Abstract

The invention provides a process for production of aluminum alloy formings superior to conventional aluminum alloy forgings in mechanical strength at high temperature. A process for production of aluminum alloy formings by forging a stock consisting of a continuously cast rod made of an aluminum alloy, in which the aluminum alloy contains 10.5 to 13.5% by mass of Si, 2.5 to 6% by mass of Cu, 0.3 to 1.5% by mass of Mg, and 0.8 to 4% by mass of Ni and satisfies the relationship: Ni (% by mass) = [-0.68 OECu(% by mass) + 4.2(% by mass)] and which comprises the step (82) of preheat treatment of the stock, the heating step (87) of forging the stock, and the step (89) of postheat treatment of an aluminum alloy forming as the heat treatment / heating steps, with the step (82) involving the treatment of keeping the stock at -10 DEG C to 480 DEG C for 2 to 6 hours.

Description

technical field [0001] The present invention relates to a method for producing an aluminum alloy formed product having a forging process using a continuously cast rod made of aluminum alloy as a material, an aluminum alloy formed product, and a production system thereof. Background technique [0002] In recent years, in vehicles such as four-wheeled vehicles and two-wheeled vehicles (hereinafter simply referred to as "automobiles"), in order to improve performance and cope with environmental problems, the use of forged aluminum pistons for internal combustion engine pistons has been considered. The weight of the driving parts of the internal combustion engine such as the piston can be reduced, and the load during the operation of the internal combustion engine can be reduced, the output power can be improved, and the fuel consumption can be reduced. For internal combustion engine pistons made of aluminum alloy, cast products have been widely used in the past, but it is diffi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/043C22F1/00B21J5/00C22C21/02B22D11/00B22D11/18B22D11/20
CPCB22D11/045B21K1/18B21J5/00B22D21/007C22C21/02C22F1/00C22F1/043F05C2201/021F02F3/0084B21J1/02B22D11/003B22D11/18
Inventor 冈本康夫
Owner SHOWA DENKO KK
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