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2018
11-08
Valve is a widely used supporting product, which is applied in almost all fields of production. Valve castings are widely used in chemical industry, light industry, electric power, food and other industries because of their good corrosion re...
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2018
11-08
At present, there is no material content in the performance spot check of valve castings, but there is a jerry-building behavior in the production of products in which low-cost materials are used instead of high-cost materials. 1) the stem....
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2018
11-08
1. There are smooth holes of different sizes in the inner, surface or near surface of the bed casting. The holes are round, long and irregular in shape, single or aggregated into sheets. The color is white or with a dark color, sometimes co...
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2018
11-08
Valve is a widely used supporting product, which is applied in almost all fields of production. Valve castings are widely used in chemical industry, light industry, electric power, food and other industries because of their good corrosion re...
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2018
11-08
At present, the number of enterprises providing castings for construction machinery is large, and the scale and level are uneven. There are not many enterprises with annual output of more than 10,000 tons, most of which are small enterprise...
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2018
11-08
Special casting is a special casting technology, which is compared with traditional sand casting. Special casting has significant difference from common sand casting in moulding material, moulding method, filling form of liquid metal and so...
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2018
11-08
Wind power equipment is erected and operated at high altitudes, which is not convenient for regular maintenance. The maintenance period determined in equipment design is usually 20 years, or even 30 years. Therefore, the fatigue strength of...
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2018
11-08
Casting is an industrial technology for forming liquid metal. In the traditional foundry industry of China, the most commonly used casting technology is sand casting. Sand casting is the production of castings in sand. Sand casting can produ...
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2018
11-08
机床铸件铸造方法常用的是砂型铸造，其次是特种铸造方法，如：金属型铸造、熔模铸造、石膏型铸造等。而砂型铸造又可以分为粘土砂型、有机粘结剂砂型、树脂自硬砂型、消失模等...
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