GUIDE FOR COMPONENTS OF GATE

Type		Shape		Material
				Part Number
				SKH51		Electroforming				Carbide
						Standard type		High hardness type
				Material	Hard- ness	Material	Hard- ness	Material	Hard- ness	Material	Hard- ness
				SKH51	59~ 61HRC	Nickel alloy	Inside: 55~60HRC (Depth0.5) Outside: 40~45HRC	Nickel alloy	58~ 62HRC (The inner and outer surface have the same hard- ness)	V40	87~ 88HRA (Con- verted score to Vickers hard- ness: 960HV)
	B dimen- sion selec- tion type	SR the inside diameter		PGHB		PGEB		PGKB		PGWB
		Tapered the inside diameter		PGHBV		PGEBV		-		-
	Tip acute angle B dimen- sion selec- tion	SR the inside diameter		PGHBZ		-		-		-
		Tapered the inside diameter		PGHBVZ		-		-		-
	B dimen- sion designa- tion type	SR the inside diameter		PGH		PGE		PGK		PGW
		Tapered the inside diameter		PGHV		PGEV		-		-
	D dimen- sion designa- tion type			PGHD		PGED		PGKD		-
	Large K°type			PGHF		-		-		-
	B dimen- sion selec- tion type	SR the inside diameter		PGHT		PGET		PGKT		-
		Tapered the inside diameter		PGHVT		-		-		-
	Lower hole type			PGHTBL		-		-		-
	Nomal type			PGHS PGXS		PGES		PGKS		-
	With head type			PGHST PGXST		PGEST		PGKST		-
Blank type				-		PGEBL (Published on Internet)		PGKBL (Published on Internet)		-
Corresponding resin(Reference)				Resin polycarbonate with glass fiber		Normal resin Non-reinforced resin		Acrylic		Reinforced resin with glass fiber supper engineering plastics

·SKH51 (high-speed tool steel)
This steel is generally used as the material for pinpoint gate bushings. It is heat-treated and has excellent hardness and wear resistance.In addition, it is tough and can be readily finished to a high degree of accuracy. Because it has been hardened, any alterations must be performed using electric discharging.

·Electroforming (nickel alloy)
This material features a gate internal surface that has a fine-textured mirror finish. It reduces the risk of mold-release failure, enabling the taper angle of the gate to be reduced and also realizing a fine gate that
can be subjected to a high cycle. However, its wear resistance is inferior to that of the SKH51, so use the SKH51 or a cemented carbide product for molding glass-filled resin or hard resin.

·Cemented carbide
This material is extremely hard, and has very high wear resistance. It can reduce the incidence of deformation or enlargement due to wear of the gate hole during mass-production molding,and also trouble caused by such deformation or enlargement. In the case of a long-life die, this material is particularly effective for improving the stability of gate cutting.

Type	Shape	Part Number				Example
		SKH51		NAK80
		Material	Hardness	Material	Hardness
		SKH51	58~60HRC	NAK80	37~43HRC
Standard type		PGEH		PGEN
Reverse tapered type		PGEHR		PGENR
Headless type		PGEHS		PGENS

Not available in Europe (EU countries),North America (USA,Mexico,Canada).

Type	Shape	Part Number	Hardness	Example
Back gate type		MTGCS MTGC	40HRC~ (U type) 60HRC~ (H type)
Side gate type		MSGC	53HRC~