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Comprehensive treatment agent and method for performing aluminum alloy modification treatment by using comprehensive treatment agent

A comprehensive treatment agent, aluminum alloy technology, applied in metal processing equipment, non-electric welding equipment, manufacturing tools and other directions, can solve the problems of difficult to control the preparation process, large industrial production volume, poor effect of the modifier, etc. effect time, changes in tissue morphology, and short latency of metamorphism

Inactive Publication Date: 2019-07-12
ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention: Aiming at the problems that the commonly used modifiers are not effective and easy to burn out, the present invention provides a comprehensive treatment agent to solve the above problems, and at the same time overcome the slow melting, long incubation period, and difficult preparation of the casting intermediate alloy modifier. The defects that the process is difficult to control and the amount of industrial production is large

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  • Comprehensive treatment agent and method for performing aluminum alloy modification treatment by using comprehensive treatment agent
  • Comprehensive treatment agent and method for performing aluminum alloy modification treatment by using comprehensive treatment agent
  • Comprehensive treatment agent and method for performing aluminum alloy modification treatment by using comprehensive treatment agent

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: prepare comprehensive treatment agent as follows:

[0032] 1. Preparation of raw materials:

[0033] Calcium phosphate, sodium acetate, manganese nitrate, strontium nitrate, gadolinium fluoride, potassium chloride, sodium chloride, aluminum perchlorate, barium carbonate, flake graphite, phosphotungstic acid, and promethium nitrate do not contain crystal water and have a purity greater than 99.9wt%, particle size is 150 mesh;

[0034] The composition of sericite powder is: Al 2 o 3 28.34wt%, H 2 O is 0.04wt%, Fe 2 o 3 0.88wt%, MgO≤0.98wt%, CaO≤0.44wt%, TiO 2 0.11wt%, FeO 0.12wt%, MnO≤0.03wt%, F 0.06wt%, K 2 O 9.10wt%, Na 2 O is 0.16wt%, the balance is SiO 2 , The particle size of the sericite powder is 50-100 mesh.

[0035] A319 aluminum alloy composition by weight percentage is Si 5.2%, Ni 0.11%, Fe 0.3%, Ti 0.13%, Mg0.02%, Cu 2.8%, Mn 0.1%, Zn≤0.3%, Ca≤0.01%, the balance is Al;

[0036] 2. Preparation of comprehensive treatment agent

[0037]...

Embodiment 2

[0045] Embodiment 2: prepare comprehensive treatment agent as follows:

[0046] 1. Preparation of raw materials:

[0047] Calcium phosphate, sodium acetate, manganese nitrate, strontium nitrate, gadolinium fluoride, potassium chloride, sodium chloride, aluminum perchlorate, barium carbonate, flake graphite, phosphotungstic acid, and promethium nitrate do not contain crystal water and have a purity greater than 99.9wt%, particle size 150-250 mesh;

[0048] The composition of sericite powder is: Al 2 o 3 35.29wt%, H 2 O is 1.89wt%, Fe 2 o 3 1.56wt%, MgO≤0.98wt%, CaO≤0.44wt%, TiO 2 0.32wt%, FeO 0.67wt%, MnO≤0.03wt%, F 0.23wt%, K 2 O 11.23wt%, Na 2 O is 0.68wt%, the balance is SiO 2 , The particle size of the sericite powder is 100 mesh.

[0049] A319 aluminum alloy composition by weight percentage is Si 6.3%, Ni 0.21%, Fe 0.5%, Ti 0.21%, Mg0.07%, Cu 4.4%, Mn 0.4%, Zn≤0.3%, Ca≤0.01%, the balance is Al;

[0050] 2. Preparation of comprehensive treatment agent

[0051] ...

Embodiment 3

[0059] Embodiment 3: prepare comprehensive treatment agent as follows:

[0060] 1. Preparation of raw materials:

[0061] Calcium phosphate, sodium acetate, manganese nitrate, strontium nitrate, gadolinium fluoride, potassium chloride, sodium chloride, aluminum perchlorate, barium carbonate, flake graphite, phosphotungstic acid, and promethium nitrate do not contain crystal water and have a purity greater than 99.9wt%, the particle size is 200 mesh;

[0062] The composition of sericite powder is: Al 2 o 3 31.54wt%, H 2 O is 0.96wt%, Fe 2 o 3 1.21wt%, MgO≤0.98wt%, CaO≤0.44wt%, TiO 2 0.22wt%, FeO 0.41wt%, MnO≤0.03wt%, F 0.14wt%, K 2 O 10.10wt%, Na 2 O is 0.44wt%, the balance is SiO 2 , The particle size of the sericite powder is 70 mesh.

[0063] A319 aluminum alloy composition by weight percentage is Si 5.7%, Ni 0.16%, Fe 0.4%, Ti 0.17%, Mg0.045%, Cu 3.6%, Mn 0.25%, Zn≤0.3%, Ca≤0.01%, the balance is Al;

[0064] 2. Preparation of comprehensive treatment agent

[00...

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Abstract

The invention discloses a comprehensive treatment agent and a method for performing aluminum alloy modification treatment by using the comprehensive treatment agent. The comprehensive treating agent is prepared from the following raw materials of, by weight percent, 0.4-1.2% of calcium phosphate, 1.5-2.2% of sodium acetate, 2-6% of manganese nitrate, 12-19% of strontium nitrate, 8-12% of sodium chloride, 0.2-0.6% of gadolinium fluoride, 18-25% of sericite compound powder, 0.5-0.9% of aluminum perchlorate and the balance potassium chloride, wherein sericite in the sericite compound powder can be used as a modifier carrier for gas removal, the aluminum oxide and the silicon oxide which are rich in the sericite compound powder can remarkably improve the hardness of the alloy. Various modification elements such as sodium, strontium, gadolinium and promethium are combined, so that the modification effect is excellent; the comprehensive treatment agent and the method are applied to stirringfriction processing for aluminum alloy surface treatment, and can be effectively matched with the characteristics of the stirring friction processing technology, high-temperature refining gas removalis not needed, and the mechanical property of the aluminum alloy product is remarkably improved.

Description

technical field [0001] The invention relates to the field of aluminum alloy modification agents, in particular to a comprehensive treatment agent and a method for performing modification treatment using the comprehensive treatment agent. Background technique [0002] The silicon structure of aluminum alloy is composed of coarse five-lobed star-shaped primary silicon and long needle-shaped eutectic silicon. These silicon phases will severely split the Al matrix and cause stress concentration at the tip and corners of the Si phase. The alloy is easy to form cracks along the grain boundaries, or the plate-shaped Si itself cracks, which makes the alloy brittle, the mechanical properties, especially the elongation, are significantly reduced, and the cutting performance is not good. In order to change the existing state of silicon and improve the mechanical properties of the alloy, a modifier is generally added to the alloy to refine the primary silicon and eutectic silicon. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/04C22F1/043B23P15/00B23K20/12
CPCB23K20/129B23P15/00C22C21/04C22F1/043
Inventor 赵浩峰于鹏夏俊张椿英李子嫣
Owner ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
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