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Medium temperature wax, good rigidity, excellent dimensional stability, surface roughness and reuse. In particular, it has wide applicability to different shapes and sizes. When pressing wax in liquid or paste state, the wax shall be melted and degassed, and then loaded into the pressing wax drum, which shall be cooled to the recommended pressing wax temperature before pressing wax. The wax ash content of the model is less than 0.03%. When the wax is pressed in liquid or paste state, the wax material shall be melted and degassed at 82.0-93.5℃, and then loaded into the wax pressing barrel, and the wax pressing shall be cooled to the recommended wax pressing temperature before starting. The wax ash content of the model is less than 0.02%.
They saponify the grease with a strong base, then break down the resulting soap with hydrochloric acid to remove the stearic acid. It's a white substance that feels greasy to the hand, so candles made from it are soft and cheaper. In 1825 schaeffler and Gay-Gay-Lussac received a patent for the production of paraffin wax candles. The advent of paraffin wax candle ushered in a new era in the history of human lighting. Later, someone discovered a large oil field in North America, so a large amount of paraffin wax can be extracted from the oil, so the ideal candle has been popularized and promoted all over the world.
Medium temperature wax material physical properties: rosin - wax based mold and filled mold, melting point 70-100 degrees Celsius, mainly used for the size and surface requirements of high castings, generally stainless steel and high alloy steel products used mold. Dewaxing with steam or microwave. The wax can be reused. Under the condition that the surface roughness of investment die is qualified, the surface roughness of mold shell will become an important factor affecting the roughness of casting. Set wax injection time and pressure holding time according to the process requirements, tighten the nozzle nut, then manually inject wax to discharge part of the wax, clean and preheat the nozzle, switch the knob to the middle, touch the green button with both hands at the same time, and then complete the work cycle in automatic state.
No matter where the wax cylinder is, as long as the control knob of the wax injection system is switched to "down", when the hydraulic cylinder goes down to the end point, spin out the intermediate wax cylinder assembly and replace the new wax cylinder. Every time the wax is replaced, the residual wax on the surface of the sealing ring must be cleaned. Bubble problems may occur during wax injection or when the wax is transported to the wax mold at too fast a flow rate, resulting in turbulence and bubbles. This phenomenon can be solved by reducing the transport speed and increasing the wax injection diameter. The line shrinkage rate often depends on wax injection temperature and pressure, batch and mold temperature, so reducing line shrinkage: increasing wax injection pressure. Make sure the mold reaches the required temperature.
Increase the cycle time. Increase the diameter of the wax injection port. For the development of new products, the production cycle is quite long, in which the design and production of pressure and occupied a longer time. If the design press is used for production, the design and production cycle of the mold needs about 2 ~ 3 months, and it takes half a month for the mold to be put into production. And rapid prototyping equipment just has the advantage of this aspect, 3 days can get parts wax shape parts, and then spend half a month can get castings.