Dalian qianda trading co. LTD
Associate: manager li
秒速时时彩Associate: manager pu
Web site: www.sofoi.cn
tongren street, xigang district, dalian city, liaoning province
When the moisture content is 4%-7%, the surface flow pattern and sag degree of the injected wax part (test block) are light, and the comprehensive performance is better. The moisture content of wax should be controlled and monitored in production.
Precision casting, also known as lost wax casting, is an advanced process of forming a near-net shape. The common way is medium-temperature wax precision casting. The gate valve and elbow produced by our company are all made of medium-temperature wax precision casting.
秒速时时彩So-called medium temperature wax precision casting technology, simply be with fusible materials (such as wax material or plastic) into the meltability model (referred to as "investment pattern or model), on which the coated with several layers of tailor-made refractory coating, after drying and hardening type to form a whole shell, reoccupy steam or hot water from the melt in the shell model, and then put type shells in the sand box,
It seems well known that there are many differences in the casting process of Chinese and western bronzes. However, it seems that there are still many vague and even wrong ideas. This may be the root of the miscalculation of wax loss process in China's Bronze Age. In view of this, we intend to analyze and summarize the differences between Chinese and western bronze casting processes from the perspective of metallurgical history.
The main raw material of a candle is paraffin. Paraffin is a mixture of several higher paraffin hydrocarbons, mainly n-docosadiane and n-octadiane, which are obtained from petroleum containing wax distillates through cold pressing or solvent dewaxing. The main ingredients are n-docosadiane and n-octadiane, containing about 85% carbon and 14% hydrogen. The complementary makings that adds has white oil, stearic acid, polyethylene, essence to wait, among them stearic acid basically is used to raise softness, specific add should inspect the candle of what kind to produce and decide.