阅读说明：本技术 汽车零件半固态压铸成形工艺 (Semi-solid die-casting forming process for automobile parts ) 是由 田跃文 朱立群 陆洋峰 张峰 张显东 夏恩帅 纪伟 于 2019-08-30 设计创作，主要内容包括：本发明汽车零件半固态压铸成形工艺,步骤如下：1)将原材料填入倾转式熔化保温炉加热至750-800℃,达到组织完全过热；2)利用电磁搅拌方式对步骤1)形成的熔融态合金进行搅拌,电磁搅拌电流30-45A、频率30-35Hz；3)进行压铸工具及压铸模具预热,模具温度预热至290-310℃；4)利用压铸工具进行压铸,浇注温度570-590℃,压射速度2m/s,填充时间3s；5)利用压铸工具进行保压：保压压力35MPa,速度0.45m/s。(The invention relates to a semi-solid die-casting forming process of automobile parts, which comprises the following steps: 1) filling the raw materials into a tilting melting and heat preserving furnace to be heated to 750-; 2) stirring the molten alloy formed in the step 1) by using an electromagnetic stirring mode, wherein the electromagnetic stirring current is 30-45A, and the frequency is 30-35 Hz; 3) preheating a die casting tool and a die casting die, wherein the temperature of the die is preheated to 290-310 ℃; 4) die-casting by using a die-casting tool, wherein the casting temperature is 570-590 ℃, the injection speed is 2m/s, and the filling time is 3 s; 5) pressure maintaining by using a die casting tool: the pressure of the pressure maintaining is 35MPa, and the speed is 0.45 m/s.)

1. A semi-solid die-casting forming process for automobile parts is characterized by comprising the following steps: the method comprises the following steps:

1) filling the raw materials into a tilting melting and heat preserving furnace to be heated to 750-;

2) stirring the molten alloy formed in the step 1) by using an electromagnetic stirring mode, wherein the electromagnetic stirring current is 30-45A, and the frequency is 30-35 Hz;

3) preheating a die casting tool and a die casting die, wherein the temperature of the die is preheated to 290-310 ℃;

4) die-casting by using a die-casting tool, wherein the casting temperature is 570-590 ℃, the injection speed is 2m/s, and the filling time is 3 s;

5) pressure maintaining by using a die casting tool: the pressure of the pressure maintaining is 35MPa, and the speed is 0.45 m/s.

2. The semi-solid die-casting process for automobile parts according to claim 1, wherein: in the step 1), asbestos cloth is covered at the position of a furnace opening, so that the temperature in the furnace is ensured to be uniform, and the phenomenon of air suction oxidation is reduced.

3. The semi-solid die-casting forming process for the automobile parts, according to claim 2, is characterized in that: and 3) in the step 3), the die casting tool adopts a horizontal cold chamber die casting machine, and the opening degree of a hand wheel of the die casting machine is 1080 degrees.

4. The semi-solid die-casting forming process for the automobile parts, according to claim 3, is characterized in that: in the step 1), the solid phase fraction is 60-65%, and solid particles are uniformly distributed in the liquid phase mother liquor.

Technical Field

The invention relates to a die-casting preparation technology, in particular to a high-strength aluminum-magnesium alloy die-casting technology, and particularly shows a semi-solid die-casting forming process for automobile parts.

Background

Automobile parts are common die-cast parts, but with the development of social production, the requirements on performance parameters of the automobile parts are further improved, and the requirements cannot be met by traditional die-cast molding.

Therefore, it is necessary to provide a semi-solid die-casting process for automobile parts to solve the above problems.

Disclosure of Invention

The invention aims to provide a semi-solid die-casting forming process for automobile parts.

The technical scheme is as follows:

a semi-solid die-casting forming process for automobile parts comprises the following steps:

1) filling the raw materials into a tilting melting and heat preserving furnace to be heated to 750-;

2) stirring the molten alloy formed in the step 1) by using an electromagnetic stirring mode, wherein the electromagnetic stirring current is 30-45A, and the frequency is 30-35 Hz;

3) preheating a die casting tool and a die casting die, wherein the temperature of the die is preheated to 290-310 ℃;

4) die-casting by using a die-casting tool, wherein the casting temperature is 570-590 ℃, the injection speed is 2m/s, and the filling time is 3 s;

5) pressure maintaining by using a die casting tool: the pressure of the pressure maintaining is 35MPa, and the speed is 0.45 m/s.

Furthermore, in the step 1), asbestos cloth is covered at the furnace mouth, so that the temperature in the furnace is ensured to be uniform, and the phenomenon of air suction oxidation is reduced.

Further, in the step 3), a horizontal cold chamber die casting machine is adopted as a die casting tool, and the opening degree of a hand wheel of the die casting machine is 1080 degrees.

Further, in the step 1), the solid phase fraction is 60-65%, and solid particles are uniformly distributed in the liquid phase mother liquor.

Compared with the prior art, the invention can carry out high-strength preparation of the automobile parts and ensure the product percent of pass.

Detailed Description