Q:How to improve the surface roughness of casting parts?

One is to improve the accuracy of the model; the two is to improve the molding sand mesh. How much is the other relationship?.

Q:Why do casting parts have air holes?

Cangshan Qiao hidden his answer is quite comprehensive, you can try using inert gas to reduce air cover

Q:What is the ejection angle of the die casting (Tan Gang)?

Because after the wax, wax parts will have a slight contraction, which is good for demoulding. Many moulds don't do the ejection angleEspecially deep hole, and customers to discuss, generally take 0.3-1 degrees is enough

Q:What reason is the bronze statue choking fire?

The casting process in boiling phenomenon, is the setting of the exhaust hole positioner position or number is not reasonable, the air cavity can not be discharged, overwhelmed by a material inlet, reflux, change mould, sincerely help you look forward to adopt,

Q:Younger brother is to do casting valve, precision casting parts, the valve internal sand serious, but the appearance is very standard, this is why, for God answers, thank you!

Valve sand core mold drying is not in place, excessive water content

Q:Cause of choking of casting parts

The reason is not in the coated sand, see coating gas evolution, the best use of zircon powder coating (low gas evolution), there is a mold according to a vent needle, this depends on your way is flat or vertical pouring pouring pouring, if vertical pouring, venting pin on the die, and the big piece how could the plane, pouring water flat, a breath, a taboo ah!

Q:I often see Waixiejiagong drawings, casting, how to distinguish the latheman.

Yes, casting drawings are casting drawings with machining allowances, slopes, and gating systems

Q:What foundry factories are used in the casting parts of China's major automobile manufacturers?

Tangshan Yongding automobile spare parts factory also give a lot of supply, casting factory of Tangshan n to the car enterprises casting wheel gearbox etc.The team of casting experts welcome you to ask questions and accept questions!

Q:After reaming, the roughness can reach several levels, that is to say, the sample.Casting parts in rocker arm drilling, reaming, roughness, block. After reaming, the roughness can reach several levels, that is to say, the sample.

Radial drilling machine can achieve boring, reaming function, but as much as you want, according to your requirements and material to determine!

Q:There is a little trace of polishingShock polishing is even worseElectrolysis can not be uneven, there is a slight bump

Use the vibrator to polish the material: the high aluminum porcelain 4cm (with a polishing agent that has an automatic mending function), you go find this polish,