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Method for forming alloy cast material and alloy product

A technology for alloys and products, which is applied in the field of its composition and forming methods, can solve the problems of consumables, inappropriateness, long processing time, etc.

Active Publication Date: 2018-02-06
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the power components of transportation vehicles such as automobiles and motorcycles are made by traditional casting. This traditional process has limitations on product appearance and structural design, and requires cumbersome CNC post-processing and heat treatment processes. The process is time-consuming, energy-consuming, and consumables. , and it is more difficult to process power components with complex shapes. Complex processing procedures and long processing time lead to high processing costs
To sum up, the traditional casting method is not suitable for the development of automobile and locomotive components with complex structures and multiple requirements
[0003] To sum up, there is an urgent need for new aluminum alloy materials and their processing methods to overcome the labor and time-consuming problems of existing technologies

Method used

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  • Method for forming alloy cast material and alloy product
  • Method for forming alloy cast material and alloy product
  • Method for forming alloy cast material and alloy product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] According to the weight ratios of Al, Si, Cu, Mg, Ni, and Ti in Table 1, the aluminum alloy is smelted in a high-temperature furnace first. Then, gas powder spraying, laser additive manufacturing sintering, and aging heat treatment (165°C, 6 hours), and the hardness analysis results of the aluminum alloy sintered body before aging heat treatment and after aging heat treatment (by Rockwell hardness tester Carry out HRB standard hardness test, according to ASTM E18 standard) as shown in Table 1. The aluminum alloy sintered body has the characteristic of age precipitation hardening, and the hardness of the sintered body with the copper content of 0.3 weight part and 0.4 weight part is the largest after aging heat treatment.

[0015] Table 1

[0016]

[0017] The normal temperature tensile strength of the above-mentioned test pieces A1-A9 (tested with Gleeble3500 for tensile strength at room temperature, according to ASTM E8 specification), normal temperature yield stre...

Embodiment 2

[0021] Fix the content of silicon, magnesium, nickel and titanium, and change the copper content in the aluminum alloy powder for alloy melting. The weight percentage of the composition is shown in Table 3, and then undergo gas powder spraying, laser additive manufacturing sintering, and aging heat treatment in sequence (165°C for 6 hours). Table 4 shows the hardness of the modified aluminum alloy sintered body before and after aging treatment, and Table 5 shows the normal temperature tensile strength, normal temperature yield strength, normal temperature elongation, high temperature tensile strength, and high temperature yield of test pieces B1-B4 The measurement standards for strength and high temperature elongation are the same as those mentioned above. In the case of considering the strength and ductility of the material, the Al 91.5 Si 7 Cu 0.3 Mg 0.8 Ni 0.2 Ti 0.2 (B3) After aging treatment, the hardness can reach HRB 74.5, and the mechanical strength and elongatio...

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Abstract

The invention provides an alloy cast material, which includes: 97 to 99 parts by weight of Al and Si; 0.25 to 0.4 parts by weight of Cu; and 0.15 to 1.35 parts by weight of a combination of at least two of Mg, Ni, and Ti. The above-mentioned alloy cast material is powdered by gas spraying, and then the sintered powder is manufactured by laser additive to form a sintered body. The aging heat treatment sintered body can complete alloy products.

Description

【Technical field】 [0001] The present invention relates to cast alloys, more particularly to their composition and forming methods. 【Background technique】 [0002] In recent years, the price of oil has soared. With the issues of energy and the environment getting more and more attention, the power components (such as turbochargers, cylinder heads, exhaust manifolds, etc.) Aluminum alloy materials have become the main trend at present. At present, most of the power components of transportation vehicles such as automobiles and motorcycles are made by traditional casting. This traditional process has limitations on product appearance and structural design, and requires cumbersome CNC post-processing and heat treatment processes. The process is time-consuming, energy-consuming, and consumables. , and it is more difficult to process power components with complex shapes, complex processing procedures and long processing time lead to high processing costs. To sum up, the tradition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22C1/04
CPCB22D21/007B22F5/008B22F5/02B22F2003/248B22F2998/10C22C1/0416C22C21/02C22F1/043B33Y10/00Y02P10/25B22F10/64B22F10/28B33Y70/10B22F9/082B23K26/342
Inventor 周育贤杨智超侯彦羽翁鋕荣陈溪山
Owner IND TECH RES INST