19/11/2013 Industrial Equipment
In 2002,cast steel products of China reached 16.3 million tons,equivalent to the sum of casting steel products of U.S. and Japan over the same period.IN the past few years,the prodution of China's steel castings has ranked first all over the world.There are different kinds of castings,such as investment castings,stainless steel castings,and ductile iron castings,used in many industrial fields.Therefore,how to keep good quality of castings is very important.Here are several factors affecting the quality of castings.
1.Die casting design
Designers should first fully understand the user's requirements and working conditions , in the design , paying particular attention to meet the requirements as far as possible under the premise of casting a simple structure . Appropriate thickness of the uniform and leave the necessary gradient mode , otherwise it will lead to casting pits appear , porosity, shrinkage due to cast pull marks , cracks, deformation and other defects,will cause a lot of substandard steel casting products.
2.Mold structure,machining accuracy and the mold material selection
Die casting mold casting is made of,and steel casting product quality are closely related.Mold structure is irrational,regardless of the measures taken from the process.It is difficult to make qualified products.
3.Shrinkage of the casting material
Shrinkage of the casting material is generally an average or a certain percentage range is given as a percentage.Usually selected material has an average shrinkage rate,if necessary, can be die for testing. Obtained in the test mold after the required data.And then proceed to the design and manufacture of molds for mass production.
4.Die casting process design and implementation
Casting process and die design and implementation , the quality of casting equipment,operator skill levels. Achieve basic control process is to die casting equipment,casting materials and combination of elements such as mold and make use of the process. The main parameters of the process and not strictly enforced,would die casting shrinkage occurs , deformation,due to cast,dimensions substandard .
investment castings: http://www.ftm-china.com/product/investment-castings.html
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