Low-shrinkage blended wax material and preparation method thereof
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A low-shrinkage, paraffin-wax technology, applied in the direction of casting and molding equipment, can solve the problems of unstable shrinkage of the product line, difficult to meet precision casting, non-reusable, etc., and achieve good chemical stability, strong applicability, and low-temperature volatilization The effect of low content
Active Publication Date: 2022-01-04
NANJING TIANSHI NEW MATERIAL TECH +1
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Problems solved by technology
[0005] At present, domestic investment casting wax still has problems such as few developed varieties, low output, and poor strength, especially the problem of unstable shrinkage of the product line and non-reusable problems. The above-mentioned technical products have not been solved, and it is difficult to meet the needs of the development of the precision casting industry.
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Embodiment 1
[0030] (1) Natural rosin (50 g, 50%) and paraffin wax No. 64 (40 g, 40%) were melted at 100°C.
[0031] (2) In the melted wax liquid, add microcrystalline wax (2g, 2%), Sichuan wax (3g, 3%), polyethylene wax (5g, 5%) and antioxidant 264 (0.1g, 0.1%) ), mixed uniformly in the reactor at 100°C.
[0032] (3) A new type of special blended wax is prepared by steel belt granulation.
Embodiment 2
[0034] (1) Natural rosin (50 g, 50%) and paraffin wax No. 60 (40 g, 40%) were melted at 100°C.
[0035] (2) In the melted wax liquid, add microcrystalline wax (2g, 2%), Sichuan wax (3g, 3%), polyethylene wax (5g, 5%) and antioxidant 264 (0.1g, 0.1%) ), mixed uniformly in the reactor at 100°C.
[0036] (3) A new type of special blended wax is prepared by steel belt granulation.
Embodiment 3
[0038] (1) Polymerized rosin (50 g, 50%) and paraffin wax No. 60 (40 g, 40%) were melted at 100°C.
[0039] (2) In the melted wax liquid, add microcrystalline wax (2g, 2%), Sichuan wax (3g, 3%), polyethylene wax (5g, 5%) and antioxidant 264 (0.1g, 0.1%) ), mixed uniformly in the reactor at 100°C.
[0040] (3) A new type of special blended wax is prepared by steel belt granulation.
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Abstract
The invention discloses a low-shrinkage blended wax material and a preparation method thereof, and relates to the technical field of precision investment casting. The preparation method comprises the steps: heating and melting rosin and paraffin, adding a grain refiner, a viscosity modifier, a flexibilizer and a heat stabilizer into liquid wax, placing in a reaction kettle, and uniformly mixing to prepare the novel reusable special blended wax. The special novel blended wax has the advantages of small linear shrinkage rate, small expansion coefficient within softening temperature, low heat capacity, sufficient strength and hardness, small viscosity in a molten state, small residual ash content, low content of low-temperature volatile matters, good chemical stability, fine grain structure, repeated use and the like. The prepared special novel blended wax can meet the size precision requirements and surface quality requirements of various complex precision castings and has wide market application prospects, and meanwhile, the preparation method is simple, low in cost, high in applicability, capable of being repeatedly used and capable of being used for large-scale production.
Description
technical field [0001] The invention relates to the technical field of investment precision casting, in particular to a low shrinkage compounded wax material and a preparation method thereof. Background technique [0002] In more than half a century after World War II, precision casting has experienced rapid development, from the initial use in the manufacture of false teeth and jewelry, to the application in national defense and industrial civilian products. Today, the products made by precision casting are not only used in military and aviation sectors, but also in industries and other sectors that are closely related to the lives of the masses, such as energy, chemical industry, petroleum, textiles, light industry, electronics, transportation, Medical equipment and other departments. [0003] my country's investment casting industry is a relatively slow-growing industry, and there is still a big gap between the precision casting industry of advanced countries in the worl...
Claims
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