Precision Casting Process
Sol process is called investment casting or precision casting
, is a little cutting or no cutting of the casting process, the casting industry in a superior technology, its application is very broad. It is not only applicable to all types, all kinds of alloy casting, casting and production of dimensional accuracy, surface quality is higher than other casting methods, or other casting methods were difficult to cast complex, high temperature, difficult in the casting process, can be cast by investment casting too.
Casting is in the ancient steel casting based on the developed. As ancient civilizations, China is using this technology one of the earlier, far in the centuries BC, in ancient China to create the working people of this lost wax casting technique, used with a variety of fine casting patterns and words bronze tripods and utensils, and other products, such as respect for the Spring and Autumn when the tomb site, etc.. Tomb respect to multiple base plate intertwining dragons, they end to end, staggered up and down to form a moire-like multi-layered hollow middle pattern, these patterns is difficult with ordinary casting process produced, but with the lost wax casting process, you can not use paraffin strength, easy-to-carved features, you can use common tools and the carving out of the tomb to get the same respect paraffin plate material artifacts, and then additional gating system, paint, dewaxing, casting, can be beautiful tomb respect dish.
After dipping hanging sand must be fully dry before dipping again linked to the next sand, or impact-type, factories, the strength of precision casting process.
Paraffin wax mold is mainly responsible for radio production, the main equipment horizontal duplex pneumatic wax mold casting machine, horizontal duplex hydraulic wax casting machines and advanced equipment, configuration and reasonable.
Radio wax process:
1. The original still in the bucket into the melted wax.
2. In the 95 ~ 98 under the static.
3. Remove the air bubbles in the canning wax.
4. Into the thermal insulation box 54 stand-by, shooting wax employees in strict accordance with operating instructions and operate the plant and operational procedures of injection of the wax pieces repaired burr inspection area evacuation test, qualified group selection based on tree dies casting parts according to technical requirements technical requirements for selected group tree.
After the tree group to order, manufacturing, factories,
Responsible for casting type, factories, the production company uses advanced silica sol, factories process.
Shell-process:
Coating type, factories, the number of times determined according to product requirements, type, factories, drying after dipping hanging sand, shell dry and drying room should be strictly controlled temperature, humidity and temperature control to prevent the wax type, factories, different thermal expansion occurs the phenomenon of rising, factories, and control the humidity because humidity is too low, too fast drying type, factories, generate crack, factories, humidity is too large then type, factories, drying too slow.
Affect the production schedule slurry sealing wax dewaxing drying off after the lost-wax kettle when the vapor pressure must be within 6 seconds or more rose to 0.45Npa dewaxing process appears to prevent the phenomenon of inflation, factories, factories, lost-wax type after test after passing through transfer sequence casting
The workshop is the core process plant, responsible for parts of the casting work, shop has 4 sets of high frequency electric furnace.
by: lucu00123
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