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:As shown, how do I achieve the tightness test of this product, and achieve industrial production? Seek expert advice.

Precise and tight sealing of the surface to which the test piece is to be tested, equipped with an airtight test instrument, and an electrical control system. You can complete automated testing equipment

Q:My parts complex, machining costs are relatively high, so want to cast, but the surface needs anodizing, what material will be better?

Yes, the cast aluminium is polarized and gray, but the key problem is to guarantee the quality of the aluminium casting, and the quality of the other aluminium casting is not good.

Q:Which surface is coarser for cast iron or cast steel castings? Why?

The surface of the steel is more rough, because the coating sand cast steel cast iron particles compared with graphite coating degree, the other one is to get a better air permeability and collapsibility of sand, the compaction degree is smaller than iron. Roughness mainly depends on the surface roughness on the surface of the sand.

Q:Lathe processing stainless steel casting parts to use what type of tool, the speed into the amount of how much tool angle

Processing stainless steel materials, you can use YG class tools, such as YG8, YG8N. The tool geometric parameters g0=15 degrees to 18 degrees, a0=6 degrees to 8 degrees, kr=75 degrees, ls=-5 degrees to -8 degrees; cutting amount is Vc=43 m/min, ap=0.3 to 0.5 mm, f=0.16mm/r.

Q:In theory, which is more expensive, forging parts or casting parts?

The structure of the casting is relatively flexible in design, and the modeling is easy to realize.

Q:Cause of choking of casting parts

Choke fire is the process of pouring a large number of gases can not be discharged smoothly, boiling in the metal liquid, resulting in a large number of castings in the pores, and even incomplete casting defects

Q:What is the reason for 304 stainless steel precision casting parts to be changed?

Steel deformation control is one of the most common problems in the metal processing industry. Any process will occur. The casting is the largest deformation and the least fine. It is generally used to produce blank blanks

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

The technical condition or the material column in the title column will tell whether it is a casting drawing or not. However, the need for casting drawings, and some also through machining (car, milling, etc.), this should be part of the process drawings, process drawings are described

Q:Selection of hydraulic press is the casting parts and steel plate welding, how to choose?

Casting parts in one shape, the overall processing in this regard than steel plate welding better. The same price is much more expensive than steel. Large hydraulic presses seldom have casting parts.