Preparation method of co-injection multi-layer structure part
A multi-layer structure and co-injection technology, which is applied in the field of powder co-injection molding, can solve the problems of large interfacial bonding strength due to component differences, difficulty in preparing materials with comprehensive properties, and unfavorable mass production, etc., achieving high interfacial bonding strength and suitable for large Large-scale production, solving the effect of large ingredient restrictions
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[0035] Example 1-1:
[0036] Preparation technique of co-injection multilayer structure part, which follows:
[0037] A, raw material preparation: A matrix material selected aerosolized prepared 316L stainless steel powder, an average particle diameter of 15μm. B is a bond powder and fortified powder B1 B2 mixed powder. B1 powder adhesive composition is Co-Cu, average particle diameter 15μm, strengthening a component of the powder B2 ZrO 2 Average particle diameter of 300 nm, the volume fraction of bonded powders B1 powder B is 35%.
[0038] B, Preparation of the binder: the following formulation mass percent, polyoxymethylene (POM) 80%; polypropylene (PP) 10%; polyethylene wax (PE wax) 5%; stearic acid (SA) 5%.
[0039] C, feeding Preparation: 316L stainless steel powder with a binder in a volume ratio of 45%: kneaded, granulated feed made from 55% A, kneading temperature of 155 deg.] C, mixer speed is 90r / min, kneading time is 2H; B powder binder volume ratio of 48%: 52% knead...
Example Embodiment
[0044] Example 1-2:
[0045] Preparation technique of co-injection multilayer structure part, which follows:
[0046] A, raw material preparation: A matrix material selected aerosolized prepared 316L stainless steel powder, an average particle diameter of 15μm. B is a bond powder and fortified powder B1 B2 mixed powder. B1 powder adhesive composition is Co-Cu, average particle diameter 15μm, strengthening a component of the powder B2 ZrO 2 Average particle diameter of 400 nm, the volume fraction of bonded powders B1 powder B is 35%.
[0047] B, Preparation of the binder: the following formulation mass percent, polyoxymethylene (POM) 80%; polypropylene (PP) 10%; polyethylene wax (PE wax) 5%; stearic acid (SA) 5%.
[0048] C, feeding Preparation: 316L stainless steel powder with a binder in a volume ratio of 45%: kneaded, granulated feed made from 55% A, kneading temperature of 155 deg.] C, mixer speed is 90r / min, kneading time is 2H; B powder binder volume ratio of 48%: 52% knead...
Example Embodiment
[0053] Example 1-3:
[0054] Preparation technique of co-injection multilayer structure part, which follows:
[0055] A, raw material preparation: A matrix material selected aerosolized prepared 316L stainless steel powder, an average particle diameter of 15μm. B is a bond powder and fortified powder B1 B2 mixed powder. B1 powder adhesive composition is Co-Cu, average particle diameter 15μm, strengthening a component of the powder B2 ZrO 2 Average particle diameter of 300 nm, the volume fraction of bonded powders B1 powder B is 35%.
[0056] B, Preparation of the binder: the following formulation mass percent, polyoxymethylene (POM) 80%; polypropylene (PP) 10%; polyethylene wax (PE wax) 5%; stearic acid (SA) 5%.
[0057] C, feeding Preparation: 316L stainless steel powder with a binder in a volume ratio of 45%: kneaded, granulated feed made from 55% A, kneading temperature of 155 deg.] C, mixer speed is 90r / min, kneading time is 2H; B powder binder volume ratio of 48%: 52% knead...
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