Q:Question, such as title, I hope I don't copy the definition of rolling and casting in Baidu encyclopedia, thank you

uch as: automobile transmission shaft adopts mechanical rolling machine with good performance, gray cast iron can play seismic effect effectively, with good thermal conductivity of radiator graphite in gray cast iron, the aircraft engine turbine blade by casting directional solidification casting and Dan Jingzhu.Do everything we can to make the best use of it, the advantages and disadvantages of rolling and casting, and you'll find it yourself, Baidu, depending on how you use it

Q:It is generally said that cast iron is re smelted by pig iron. My question is..:1 pig iron for melting iron, is directly cast into products (such as bed cover, etc.); or that is just the first pig iron smelting iron casting, such as to cover, bed and other products, will once again cast iron melt to casting?2, there are many castings to the engine. Are these castings made by the engine manufacturer themselves or bought by others?There is no need to answer all. Thank you！！！

The first to ask, such as casting end cover, bed and other products, is to put the iron melting and casting againThe two question, their casting castings manufacturers than to buy professional casting factory production, production quality more security professional.

Q:What are the casting parts used to test shrinkage holes?

3 fluorescent magnetic powder, this method can also be found in part.

Q:How can the casting be free of trachoma?

Measures for the prevention of trachoma in castings:1, sand compaction to high, paint two times;

Q:How to calculate the price of casting parts?

According to the complexity of the workpiece, material and casting requirements and process yield

Q:What is the difference between casting and stamping parts?

Separation process is also called blanking, the purpose is to make the stamping parts along a certain contour line from the sheet metal separation, at the same time guarantee the quality requirements of the separation section. Stamping is a highly efficient production methods, the use of compound die, especially the multi station progressive die stamping process can be completed in a multi machine, realized by belt uncoiling, leveling, punching, forming and finishing automatic production. High production efficiency, good working conditions, low production costs, can produce hundreds of parts per minute.

Q:Casting parts have poor surface finish. What sand is used to make them?

Now resin sand, coated sand and other processes are also very good surface.

Q:What are the causes of pitting on the surface of a precision casting?

The quality of the shell surface is out of order. Or shot blasting out of question.

Q:How can the casting be quenched and tempered?

Another is the result of pre heat treatment (quenching or annealing) after quenching and tempering treatment, suitable for ZG35SiMNMo, ZG35CrMo and so on. Please tell the casting process is your product and material and then set tempered.: shutup:

Q:When there is no flaw detection for large casting parts, is there any crack inside?

According to the industry standards, within the scope of the standard requirements to determine whether the product is qualified