CUMSA STANDARD FT DATE INSERT

Specifications

CENTER PINS,CORE PINS,CORE SLEEVES INLAY,INLAY BUSHINGS

Material :SKH51 Hardness :59~61HRC

Material :SKD61 Hardness :40-45HRC

Nitrided surface Hardness :HV900 and higher.

Coaxiality kept within 0.005 mm,

Dia. 0.3-14mm,The end may be customized

RECTANGULAR EJECTOR PINS

Material :SKH51Hardness :59-61HRC

The flat part may be machined to 0.3mm thickness with 0.005mm precision.

The flat part shall be abraded after being subject to heat treatment so as to ensure the consistency in its internal structure and result in high tenacity and non-deformation.

PARTICULARLY NITRIDED EJECTOR PINS

Material :SKD61 Internal

Hardness :40-45HRC Surface

Hardness :HV900 above.

pin dia.:2.0-25mm ,

length:below 1000mm ,

Thickness of nitration case : 0.02-0.05mm ,After surface treatment, the product will have an anti-wearing and corrosion-resistant surface with fairly high hardness and a body with fairly low hardness and high tenacity, applicable for molds operating under high temperature

HIGH-SPEED STEEL EJECTOR PINS

Material :SKH51 Hardness :59-61HRC.

The minimum diameter of pin to be machined is 0.2mm,

with the maximum precision up to 0.002mm.

Further machining such as chrome-plating and character-engraving is allowed for working end. Unremitting efforts in research has made us the pioneer to make ejector pin with high-speed steel which is of high hardness, high ductility, high grinding resistance and high heat resistance, better for precision mold, capable of increasing the service life significantly, particularly being very effective in controlling the hot deformation for precision mold.

EJECTOR SLEEVES

 Material :SKH51 Hardness :59-61HRC

Length:within 300mm

Coaxiality :0.01mm

Max. precision: 0.005mm.

Material :SKD61 Internal Hardness :38-42HRC

 Surface Hardness : HV900 and higher Length: 1000mm and lower Coaxiality:0.06mm

Max. precision 0.01mm

The internal holes of these products have been subjected to precision grinding and rigid coaxiality control to ensure proper fitness with ejector pin and core as well as high compatibility.

SEMICONDUCTOR COMPONENTS

Material :SKH51 Hardness :59-61HRC Surface can be chrome-plated

Material :SUS440C Hardness :56-58HRC

 Machining range:Dia.1-5mm precision up to 0.003mm

The chrome plating thickness may amount to 0.003mm.

The mirror finishing at the end may amount to a toughness of 0.1s and better.

Character engraving is also available. Extensively applicable for semiconductor container molds.

RUNNER AND GATE COMPONENTS

Sprue bushing and locating ring made of hot rolled steel. The tapered bore subject to precision grinding offers ease of demolding. The front end can be machined to various shapes and structure. The tapered bore of pinpoint gate has high precision and allows easy demolding. The front end can be machined to various shapes. The runner lock pin made of high speed steel is of high strength and excellent wearing resistance.

GUIDE PINS AND BUSHINGS

Guide pin. Materials:SUJ2 Hardness:HRC58 and above.

Subject to high-frequency quenching and precision grinding.

Of excellent wearing resistance and high guiding/positioning precision.

The taper pin is made of quality steel to attain a precision of 0.005mm.

The roller guide bushing of ejector is available from stock in China