Metal piece manufacturing method and metal piece obtained by using same
A manufacturing method and technology of metal parts, which are applied in the field of metal parts manufacturing methods and metal parts obtained by the method, can solve problems such as easy breakage of wire taps, reduced production efficiency, and damage to instruments, so as to avoid wire tap breakage, Efficiency improvement and cost reduction effects
Inactive Publication Date: 2011-10-19
SHENZHEN FUTAIHONG PRECISION IND CO LTD
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Problems solved by technology
However, after the sintering treatment of the metal powder molded parts, the hardness increases (usually up to about HRC30), which makes tapping more difficult, resulting in reduced production efficiency
And when using a tapping machine to tap the hole, the tap on the tapping machine (for making the peripheral wall of the hole to form a threaded processing tool) is also easy to be broken, causing damage to the instrument, resulting in failure of the tapping. Increased costs
Method used
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Embodiment Construction
[0023] see Figure 1 to Figure 2 , the manufacturing method of metal piece 20 of a preferred embodiment of the present invention comprises the following steps:
[0024] A metal piece blank 10 is formed. The metal piece blank 10 includes a first base 11 and a first opening 13 formed on the metal piece blank 10 . The method for forming the metal body 10 can be a metal powder injection molding technique, which includes the following steps:
[0025] Mixing means that the metal powder (this embodiment is stainless steel SUS 17-4PH powder) and the binder are uniformly mixed to form a feed. The binder can be polyethylene (Polyethylene), polyvinyl chloride (Polyvinyl Chloride), polystyrene (Polystyrene), polypropylene (Polypropylene), polycarbonate (Polycarbonate), nitrocellulose (CelluloseNitrate), phenolic resin ( Phenol-Formaldehyde), Polyurethane, Epoxide Resin, Monosaccharides, Polysaccharide or Agar;
[0026] Granulation, that is, the feed is made into particles of 2 to 15 mi...
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The invention provides a metal piece manufacturing method and a metal piece obtained by using the same. The manufacturing method of the metal piece comprises the following steps: molding a metal piece green body, and forming a first open pore on the metal piece green body formed by utilizing a metal powder injection molding technology; carrying out tapping on the first open pore by using a tapping machine to form a first thread on the peripheral wall of the first open pore; and degreasing and sintering the metal piece green body. The metal piece also comprises a basal body on which a second open pore is formed, the peripheral wall of the second open pore is provided with a second thread, the metal piece is formed by the metal powder injection molding technology, and the second thread is formed after injection molding and before degreasing and sintering.
Description
technical field [0001] The invention relates to a metal piece manufacturing method and a metal piece made by the method, in particular to a simple, efficient and low-cost metal piece manufacturing method and the metal piece made by the method. Background technique [0002] Metal Powder Injection Molding (MIM for short) is a new powder metallurgy forming technology formed by introducing modern plastic injection molding technology into the field of powder metallurgy. The basic process is: firstly, the solid powder and organic binder are evenly mixed, and after granulation, they are injected into the mold cavity with an injection molding machine to solidify and form in a heated and plasticized state, and then chemically or thermally decomposed. The binder in the blank is removed, and finally the final product is obtained through sintering and densification. Compared with traditional technology, MIM technology has the characteristics of high precision, uniform structure, excell...
Claims
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IPC IPC(8): B22F3/22
CPCB22F3/1021B22F3/225B22F5/08B22F5/10
Inventor 曾令斌洪国兵
Owner SHENZHEN FUTAIHONG PRECISION IND CO LTD