Characteristics

Characteristics of Taisei’s MIM

	Material ・Variety of materials, such as stainless steels, structual steels, hard steels, heat resistant steels, magnetic material, Titanium, Copper ・Mainly stainless steel and Fe-Ni alloys Binder ・Short debinding time ・Little deformation(=High accuracy) ・Little residual carbon(=High resistance to corrosion) ・Less binder(=High accuracy) ・Long debinding time ・Large deformation during debinding(=Secondary work is necessary) Injection Molding ・Micro and small machines (=Excellent forming stability) ・Principally single cavity (=Combination of hot-runner for mass production) ・Large machines (=Poor forming stability) ・Multi cavity for mass production(=Unstable accuracy) Debinding & Sintering ・Continuous debinding and sintering (=Reduction of total hours) ・No handling between dibinding and sintering(=Quality stability) ・Separated debinding and sintering Post-processing ・In-house or outsourcing process for barrel polishing, plating, heat-treatment and assembly are available. ・Mainly just sintered condition. Trial ・After mold preparation, 3 to 4 weeks for the first sample. ・Usually 2months. Lot ・Monthly 500 to 500,000 pieces per lot. ・Limited to minimum 10,000 pcs. per month. Advan tages ・Own developed technology for the total process ・Challenge for the new material and products. ・Licensed manufacturer. ･Limited selection of material and process. ・R&D is difficult.

Size and Tolerances

	Dimension Length ＜30ｍｍ Thickness 0.5～5ｍｍ Tolerances ＜5mm ±0.03ｍｍ 5～10mm ±0.04ｍｍ 10～20mm ±0.08ｍｍ 20～30mm ±0.15ｍｍ Surface Roughness Ra ＜3μｍ Rmax ＜10μｍ Weight ＜3μｍ ＜50ｇ

The above specification may be variable depending on the size and the material of the products. Please ask for the details upon inquiry.
High accuracy and smoother surface may be available upon request.
Secondary work is available.

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Material List

Heat resistant material, low expansion material, hard metal are also available.
CIM(Ceramic Injection Molding) is available.

Reference to Product Design

Ejector Mark
・Trace of ejector pin which push molded compacts out of mold.
Parting Line
・Slight print mark of mold separation. Usually the mold is designed so that the mark does not show up at an important part of the product.
Gate Mark
・The entrance of the material makes a slight mark, after the injection channel is removed.
Undercut
・Such obstacle part that sticks out perpendicular to the direction of mold is named “undercut”.The part may be formed by using sliding core mold. Undercut in a hole may be available with our special process.
Draft
・Small taper as much as 1 degree is preferable for easy take out of products. In some cases , such taper is not necessary.
Round Edge
・Inside corner and outside edge shall be rounded or chamfered as much as possible.

Manufacturing Facilities

・Kneader 3units	・Debinding Furnace　2units
・Pelletizer 1unitt	・Sintering Furnace　6units
・Injection Molding Machine 7units	・Inspection Devices and others　8units
・Extrusion Machine 1unit

<<Characteristics of Taisei’s MIM

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