Water-soluble salt core type metal powder injection molding technology
A technology of water-soluble salt and metal powder, which is applied in the field of water-soluble salt-cored metal powder injection molding technology, can solve problems such as unsatisfactory effects, and achieve lower production costs, lower use conditions, high strength and high temperature resistance. Effect
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Embodiment 1
[0029] The steps of this method are as follows:
[0030] ① Mixing: Put the metal powder and organic binder into the internal mixer at a ratio of 8:1. The organic binder is polyethylene, polypropylene, polyoxymethylene, polystyrene, vinyl acetate, paraffin, beeswax one or more of them. In order to reduce the oxidation tendency of the metal powder and at the same time suppress the evaporation of the organic binder, the metal powder and the organic binder are kept at a temperature of 180°C in a closed environment and stirred for 40 minutes to make the metal powder and the binder Mix well to prepare granular feed suitable for injection.
[0031] The shape of the material used in injection molding is generally cylindrical or square. As a specific implementation, the material used in this embodiment is cylindrical.
[0032] ②Preparation of water-soluble salt core: mix NaCl powder, Na 2 SO 4 Powder and CaCl 2 The powder is mixed evenly according to the molar ratio of 6.5:2.5:1, ...
Embodiment 2
[0043] The steps of this method are as follows:
[0044] ① Mixing: Put the metal powder and organic binder into the internal mixer at a ratio of 10:1.1. The organic binder is polyethylene, polypropylene, polyoxymethylene, polystyrene, vinyl acetate, paraffin, beeswax one or more of them. In order to reduce the oxidation tendency of the metal powder and at the same time suppress the evaporation of the organic binder, the metal powder and the organic binder are kept at a temperature of 200°C in a closed environment and stirred for 35 minutes to make the metal powder and the organic binder The agent is mixed evenly to make a granular feed suitable for injection.
[0045] The shape of the material used in injection molding is generally cylindrical or square. As a specific implementation, the material used in this embodiment is cylindrical.
[0046] ②Preparation of water-soluble salt core: mix NaCl powder, Na 2 CO 3 Powder and KCl powder are mixed uniformly according to the mol...
Embodiment 3
[0057] The steps of this method are as follows:
[0058] ① Mixing: Put metal powder and organic binder into the internal mixer at a ratio of 88:12. The organic binder is polyethylene, polypropylene, polyoxymethylene, polystyrene, vinyl acetate, paraffin, beeswax one or more of them. In order to reduce the oxidation tendency of the metal powder and at the same time suppress the evaporation of the organic binder, the metal powder and the organic binder are kept at a temperature of 220°C in a closed environment and stirred for 35 minutes to make the metal powder and the organic binder The agent is mixed evenly to make a granular feed suitable for injection.
[0059] The shape of the material used in injection molding is generally cylindrical or square. As a specific implementation, the material used in this embodiment is cylindrical.
[0060] ②Preparation of water-soluble salt core: mix NaCl powder, Na 2 CO 3 Powder and KCl powder are mixed uniformly according to the molar ra...
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