subject: Glaze Lost Wax Casting Technology Overview [print this page] Lost wax casting method is the most difficult machining way glaze. But in the glaze art creation, but also the most can follow one's inclinations performance of the concept of art.
Dewaxing, also called lost wax, the process is: good design, three-dimensional sculpture or half anaglyph, sculpture, silicon and completed by using proper proportion, silicone brush paint uniform coating layer in the sculpture, make the sculpture with silicone brush on average. According to work in different sizes and silica gel coagulation time, generally about 2-4 hours, big works even need 10-24 hours. Silica gel and silicone oil must have appropriate proportion, can have good once and durability. Conversely, eager to finish silicon mold, add the excessive silicone or hardener, although can greatly shorten the time, silicone solidified causes deformation enough. Silicone The works, easily pulled wax wax, cannot make works fine works. And silicon mold has much use, easy, so must have patience to wait for silicon mold natural shape. Another influence on the silicon mold, malleability toughness, is the key factor to be layered times mixed silicone oil is average brush in different degree of sculpture. Although different thicknesses works, but must make silicon mold, forming a layer of dry evenly, brush again after a second, third floor, until it reaches certain evenly coated silicon mold, this is a suitable for creation, durable good mode.
We call YangMo sculptures, While using silica gel coating on its shape, called the Yin (internal hollow). Choose appropriate boundary, use the knife will open, delimit partial silicone will take out again, sculptures will be good for silicon mold division, forming hollow. This will reach appropriate melting into the wax, a silicon mold filling model, and still waiting to wax natural cooling. The use of paraffin wax candles or not ordinary, quality is not right with a soft, can not achieve the delicate aesthetic original works. Excellent wax can be hard to decorate, can the wax is too soft. But insufficient temperature will not flow into molten wax with high temperature and shortcomings, wax melting temperature, so to properly control.
Cooling molding wax pattern from silicon mold, out of the surface defect, the wax models to slightly repair tools. Will the parting line, stoma fix up, if have flat, also at this time, the repair with wax wax for repairing process. Fix the wax models of wax, can complete on plaster models. Usually, the plaster cast with plaster, but not in different materials, choose special refractory gypsum. In addition, the proportion of water is also crucial. Add a little water, wax mould meticulous no bag is full already, can make plaster good work, Add water, gypsum, not too loose enough strength in sintering furnace, surface texture and side, also can cast. So, need water allocation according to the appropriate proportion of gypsum plaster, good fireproof, in a cool and dry place dry.
Will air-dry wrapped the wax models, refractory gypsum slurry downward in the mouth shut the door, steam barrels, in case of high temperature steam jet. Adjusted the valve will use of steam, steam temperature, the wax models refractory gypsum gradually melting, slowly, until the refractory casts no residual wax, inside can stop. "Casting" 2 words, from the literal interpretation, and casting. In any metallic and non-metallic materials, density, using more than 1 proportion of its completely melt, natural flow physics.
By using "- colored glaze casting kiln casting" -that is, in GaoWenLu finish casting, rather than cast forming at room temperature. Kiln stove, gas furnace are casting, electrothermal furnace heating mode, as most clean and easy heating furnace. In principle, to burn casting products, xu cold and complete just finish the procedure of 70 percent. Of course all processes in kiln casting process, the key is the true test of artistic creation, the glaze of wisdom and patience.
The difficulty lies in kiln temperature control, slightly calculation errors that may be the lip, failure. The process of heating curves and emphasis on the cooling (cold) curve control. Xu. According to the size of the refractory casts after precise calculation, and the temperature will begin electrothermal furnace temperature, heating temperature rising gradually, gypsum and crystal glaze by temperature, crystal glaze as temperatures rise, rhythmic melting. Then follow hollow casts bending curve, slowly into the bottom. According to the design art creators glaze, casting; fill each corner, both simple and relief, brick, block or difficult chamfering, hollow out, cross winding through the kiln casting process, and deduce the lost wax casting technique of glaze is mixed, the creation of opportunely. One extend
