A kind of nano-graphite modified powder release agent for valve body casting
A technology of nano-graphite powder and nano-graphite, which is applied in the direction of casting molding equipment, casting molds, casting mold components, etc., can solve the problems of affecting the quality of valve body blanks, increasing production input costs, short service life, etc., and achieves good demoulding effect , Long service life, easy to use
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Embodiment 1
[0025] A nano-graphite modified powder release agent for valve body casting, made of the following raw materials in parts by mass:
[0026] 60 parts of polyethylene wax powder, 15 parts of nano-graphite powder, 12 parts of calcined kaolin, 11 parts of cork powder, 8 parts of titanium dioxide, 7 parts of butter, 5 parts of silicon micropowder, 4 parts of carboxymethyl chitosan, 3 parts of concentrated hydrochloric acid 2 parts, 2 parts of lauric acid, 40 parts of n-heptane, 25 parts of toluene, 65 parts of water;
[0027] Its preparation method comprises the following steps:
[0028] (1) First place the nano-graphite powder at 45-50°C for 2 hours in vacuum, then calcinate at 350-400°C for 3 hours to obtain calcined nano-graphite powder;
[0029] (2) Fully dissolve polyethylene wax powder in a mixed solvent of n-heptane and toluene, then add calcined nano-graphite powder and concentrated hydrochloric acid, disperse evenly, and microwave at a microwave frequency of 2450MHz and a...
Embodiment 2
[0034] A nano-graphite modified powder release agent for valve body casting, made of the following raw materials in parts by mass:
[0035] 65 parts of polyethylene wax powder, 15 parts of nano-graphite powder, 13 parts of calcined kaolin, 11 parts of cork powder, 9 parts of titanium dioxide, 8 parts of butter, 6 parts of silicon micropowder, 5 parts of carboxymethyl chitosan, 3 parts of concentrated hydrochloric acid parts, 2 parts of lauric acid, 45 parts of n-heptane, 30 parts of toluene, and 65 parts of water.
[0036] The preparation method of the release agent of this embodiment is the same as that of Example 1.
Embodiment 3
[0038] A nano-graphite modified powder release agent for valve body casting, made of the following raw materials in parts by mass:
[0039] 70 parts of polyethylene wax powder, 18 parts of nano-graphite powder, 15 parts of calcined kaolin, 13 parts of cork powder, 10 parts of titanium dioxide, 9 parts of butter, 7 parts of silicon micropowder, 6 parts of carboxymethyl chitosan, 4 parts of concentrated hydrochloric acid parts, 3 parts of lauric acid, 45 parts of n-heptane, 30 parts of toluene, and 70 parts of water.
[0040] The preparation method of the release agent of this embodiment is the same as that of Example 1.
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