Alloy material for preparing vehicle air conditioner compressor connecting rod
A technology for alloy materials and automotive air conditioners, which is applied in the field of alloy materials and can solve problems such as easy rust and parts failure.
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preparation example Construction
[0017] The preparation method of the above-mentioned alloy material includes the following steps: smelting-degassing-casting-extrusion-cutting-heat treatment-machining, wherein,
[0018] 1) Smelting > 800°C, after smelting is sufficient, slagging is performed, and after slagging, a phosphorus modifier is used for modification;
[0019] 2), degassing > 15 minutes, to ensure that the aluminum alloy melt is fully degassed;
[0020] 3) Casting: Hot top continuous casting, CD direct cooling, casting temperature > 780°C, speed > 30mm / min;
[0021] 4) Extrusion: Forward extrusion is used to extrude the casting rod blank into a connecting rod blank, the required extrusion temperature: 440°C-510°C, extrusion speed: 30-40 mm / s;
[0022] 5) Cutting: sawing the extruded connecting rod billet to length;
[0023] 6) Heat treatment adopts T7 process: solid solution at 490±5°C*8 hours, artificial overaging, 200±3°C*10 hours, transfer time <7s is required to improve the strength and hardness...
Embodiment
[0027] Example 2, the mass parts of each component in this example are: 20.0 parts of Si, 0.4 parts of Fe, 5 parts of Cu, 0.2 parts of Mn, 1.3 parts of Mg, 0.1 parts of Zn, 0.2 parts of Zr, and 0.2 parts of auxiliary materials Parts; said auxiliary materials are Cr, Ni, Ti, wherein, Cr, Ni, Ti are proportioned according to 2:5:3.
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