A kind of spraying material and spraying process of metal mold
A technology for metal molds and spraying materials, applied in metal processing equipment, coatings, casting molds, etc., can solve the problems of unpublished specific steps of spraying, unpublished release agents or coating components, etc., to achieve buffer friction damage, Improve the effect of gas storage and prevent sticking
Active Publication Date: 2016-02-17
ANSHUN UNIV
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Problems solved by technology
And above-mentioned two patents all do not announce the composition of mold release agent or coating, and the specific steps of its spraying are also not announced
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[0015] Below in conjunction with embodiment technical scheme of the present invention is described in detail:
[0016] A spraying material for metal molds, including zinc oxide, water glass and deionized water, in order to make the coating achieve high mechanical strength, high cohesive force, small porosity, high impermeability and water resistance, good acid resistance and heat resistance Good features, this technology preferably uses potassium water glass (potassium silicate) instead of water glass, the better material is high modulus potassium silicate, its cohesive force, strength, heat resistance and heat preservation effect are better than ordinary water glass and The performance of potassium silicate is good.
[0017] Simultaneously in order to achieve the technical effect of this technology, this technology also provides a kind of spraying process of metal mold spraying material, comprising the following steps:
[0018] 1) To prepare paint, the water temperature shou...
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Abstract
The invention discloses a spraying material for a metal mold and a spraying process thereof, belonging to the technical field of metal mold casting. Raw materials of the spraying material comprise zinc oxide, water glass and deionized water. The spraying process comprises the steps of preparing a coating, cooling a mold, spraying and preheating and fixing. As zinc oxide, water glass and deionized water are used as the metal mold coating and a unique design of the spraying process is adopted, thermal shock to the metal mold caused by molten metal can be lightened in the casting process, direct scouring to a casting mold surface caused by liquid metal is isolated, and a casting is prevented from adhering the mold; when the casting is taken out, frictional damage of the casting to the metal mold and a mold core can be reduced and the casting is easily taken out of the mold; the cooling speed of all parts of the casting in the metal mold can be adjusted and the solidification-feeding sequence of the casting is controlled so that a thin-walled casting is obtained and meanwhile, air storage, exhaust and heat preservation effects of the metal mold can be improved.
Description
technical field [0001] The invention belongs to the technical field of metal mold casting, and in particular relates to a spray coating material for a metal mold and a spray coating process thereof. Background technique [0002] Metal mold casting is suitable for the production of large batches of small and medium-sized castings, especially in aluminum and magnesium alloy castings. The advantages of metal mold casting: the quality and size of castings are stable, and the dimensional accuracy is high; the cooling rate of castings in the metal mold is faster, which makes the density of castings higher and the grains are refined; the process utilization rate of molten metal is high. When casting a metal mold, it is necessary to spray a paint layer on the surface of the cavity. The purpose is to reduce the thermal impact of the molten metal on the metal mold during pouring, to isolate the direct erosion of the liquid metal on the mold surface, and to prevent the casting from sti...
Claims
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IPC IPC(8): B22C3/00
Inventor 张殿喜郭宗富张在玉杨秀凡周士芸闫万珺谌兰樱陈召松邓永荣吴玛佳卢春华
Owner ANSHUN UNIV