Method for producing aluminum-alloy shaped product, aluminum-alloy shaped product and production system

a technology of aluminum alloy and production system, which is applied in the direction of heat treatment apparatus, machines/engines, furniture, etc., can solve the problems of difficult to reduce internal defects, difficult to reduce the weight of the piston, and inability to examine the mechanical characteristics of high-temperature cast products, etc., to achieve excellent mechanical strength, reduce the thickness of the piston, and achieve the effect of easy production of aluminum alloy
US20100006192A1Inactive Publication Date: 2010-01-14SHOWA DENKO KK
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
SHOWA DENKO KK
Publication Date
2010-01-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention are to provide a method for producing an aluminum-alloy shaped product that exhibits high-temperature mechanical strength superior to that of a conventional aluminum-alloy forged product.The present invention provides a method for producing an aluminum-alloy shaped product, comprising a step of forging a continuously cast rod of aluminum-alloy serving as a forging material, in which the aluminum-alloy contains Si in an amount of 10.5 to 13.5 mass %, Cu in an amount of 2.5 to 6 mass %, Mg in an amount of 0.3 to 1.5 mass % and Ni in an amount of 0.8 to 4%, and satisfies a relational expression of “Ni(% bymass)≧(−0.68×Cu(% by mass)+4.2(% by mass)),and heat treatment and heating steps including a step of subjecting the forging material to pre-heat treatment (82), a step (87) of heating the forging material during a course of forging of the forging material and a step of subjecting an aluminum-alloy shaped product to post-heat treatment (89), said pre-heat treatment (82) including treatment of maintaining the forging material at a temperature of −10 to 480° C. for two to six hours.
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Description

TECHNICAL FIELD

[0001] The present invention relates to a method for producing an aluminum-alloy shaped product, which method includes a step of forging a continuously cast aluminum-alloy rod serving as a forging material, to an aluminum-alloy shaped product and to a production system for the shaped product.BACKGROUND ART

[0002] In recent years, in vehicles such as four-wheel-drive automobiles and two-wheel-drive automobiles (hereinafter such a vehicle will be referred to simply as an “automobile”), attempts have been made to employ an aluminum-alloy forged product in an internal combustion engine piston in order to attain high performance or to cope with environmental regulations. This is because, when such an aluminum-alloy forged product is employed, the weight of driving parts (e.g., a piston) for an internal combustion engine can be reduced, leading to reduction of a load upon operation of the internal combustion engine, enhancement of output, or reduction of fuel consumption. Conv...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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