Die-casting parts can be manufactured as die-casting auto parts, die-casting automobile engine pipe fittings, die-casting air conditioning parts, die-casting gasoline engine cylinder heads, die-casting valve rocker arms, die-casting valve seats, casting power accessories, die-casting motor end covers, die-casting shells, and die-casting pump Housing, die-casting construction accessories, die-casting decorative accessories, die-casting guardrail accessories, die-casting wheels and other parts. With the continuous improvement of the development level of domestic manufacturing equipment industry, the equipment level of die-casting machines has also improved significantly, and the types of parts that can be manufactured are also increasing. It has been expanded, and the precision and complexity of die-casting parts have also been greatly improved. I believe that in the near future, die-casting parts will better serve our production and life!
What are the common problems and solutions for die castings?
1. There are patterns on the surface of the castings and traces of metal flow. cause:
1.The flow path leading to the entrance of the casting is too shallow.
2.The injection pressure is too large, causing the metal flow rate to be too high, causing splashing of the molten metal.
Adjustment method:
1. Deepen the gate runner.
2.Reduce the injection pressure.
3. There are small bumps on the surface of the casting. Causes:
4. The surface is rough.
5. There are scratches, pits and cracks on the inner surface of the cavity.
Adjustment method:
1. Polished cavity.
2. Replace the cavity or repair.
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3. There are push rod impressions on the surface of the casting, and the surface is not smooth and rough. cause:
1. The push rod (ejector) is too long;
2. The surface of the cavity is rough or there are debris.
Adjustment method:
1. Adjust the length of the push rod.
2. Polish the cavity to remove debris and oil stains.
3. There are cracks or local deformations on the surface of the casting, and the causes:
4. The ejector rods are not evenly distributed or the number is not enough, and the force is uneven:
5. The fixed plate of the push rod is skewed during work, causing one side of the force to be large and the other side of the force to be small, which will deform the product and produce cracks.
6. The casting wall is too thin and deformed after shrinking.
Adjustment method:
1. Increase the number of ejector rods and adjust their distribution positions to balance the ejection force of the casting.
2. Adjust and reinstall the push rod fixing plate.
3. There are pores on the surface of die-casting parts, and the causes:
4. Too much lubricant.
5. The vent hole is blocked, and the vent hole cannot be discharged.
Adjustment method:
1. Reasonable use of lubricants.
2. Adding and repairing vent holes to make the exhaust unobstructed.
Sixth, there are shrinkage holes on the surface of the casting: Cause: The die casting is unreasonable in manufacturability, and the wall thickness changes too much. The temperature of the molten metal is too high.
Adjustment method:
1. In the thick wall, increase the craft hole to make the thickness even.
2. Lower the temperature of molten metal.
3. The outer contour of the casting is not clear, can not be formed, and partially lacks material, which causes:
1. The pressure of the die-casting machine is not enough, and the injection pressure is too low.
2. The thickness of the feed opening is too large;
3. The gate position is incorrect, causing a frontal impact on the metal.
