Archives

Sand casting technology of shearer rocker arm shell

If the sand mold casting process is unreasonable, the local hot spots of the casting shell will increase. In order to ensure the compactness of the internal structure of the casting and effectively prevent sand casting defects such as looseness and shrinkage cavity in the thick parts of the...

spacer

Sand casting of shearer rocker arm shell

Rocker arm shell is one of the important parts of shearer. The rocker arm shell of the shearer is a large box type steel casting, the structural shape is shown in the figure, and the outline dimension is 4130 mm × 1 924 mm × 1050mm, with main wall...

spacer

Production of shell steel castings by sand casting

Mainly analyzes and summarizes ZHY Casting optimized sand casting process from the aspects of product quality, scrap rate, product quantity, delivery date, cost, quality and safety risk, etc. ① Quality: the overall quality of steel castings has been greatly improved, especially the cracks and sand inclusion defects have been...

spacer

Production quality of steel castings for shell casting

Sand casting product is a kind of defective product. At present, no company at home and abroad can make sand casting without any defects. The steel castings of the shell casting are supplied as blanks, and then assembled after processing in the customer’s company. After assembly, the parts are...

spacer

Production quantity of steel castings for shell casting

When the original sand casting process produces the shell casting, the molding, core making, lower core box closing, pouring, sand dropping and other processes are basically produced according to the normal rhythm. However, due to the poor quality of the steel castings of the shell casting and the high...

spacer

Production of steel castings for motor shell by sand casting

In view of the problems and deficiencies existing in the existing furan resin sand process, motor shell sand mold casting design process and molten steel smelting process in the actual production of motor shell steel castings, combined with the current situation and development trend of molding sand process, casting...

spacer

Sand casting process design of shell casting

Process design is very important to the quality of sand casting. Even if other conditions are met, if the process design of sand casting is not good, it can not produce good products. The following is an analysis of the influence of the sand casting process design of the...

spacer
spacer

Production quality of steel castings for shell casting

From April to December 2020, ZHY casting fully applied the optimized new sand mold casting process to production, and produced a total of 2800 shell steel castings. The overall product quality has reached a new level, especially the improvement effect of sand inclusion and crack defects. 1.Crack improvement Before...

spacer

Casting defects of motor shell steel castings

The hot crack casting defects are analyzed from the macro and micro morphology. The hot crack can be divided into “tensile crack” and “shrinkage crack”. The formation mechanism of hot crack casting defects mainly includes liquid film theory and strength theory δ Less than the strain of the casting...

spacer