Catalog

Polycrystalline diamond die blanks

SUMIDIA WD

What’s SUMIDIA WD

"SUMIDIA WD" is a material with outstanding characteristics by on our unique structure formation and ultra-high pressure sintering technology. SUMIDIA achieves stable quality by thorough control from raw materials to the final inspection process

Because of firmly bonded polycrystalline structure, SUMIDIA WD eliminates the cleavage faults found in Single Crystal diamond.
SUMIDIA WD offers superior wear resistance, uniform wear and exellent fracture strength.
The homogeneity of sintered body is implemented in our original technology. The diamond content ratio in sintered body is increased and each diamond grain is firmly bonded. SUMIDIA WD has high quality polished surface.

Product Lineup

■ Solid type

Standard type

These blanks are suitable for all types of wire drawing applications.

Heat-Resistant type

These blanks are especially suited for applications which require high temperature in mounting and need high heat resistance in drawing.

■ Supported type

Standard type

The WD900 series are reinforced by a special outer ring. This feature make it possible to draw not only copper and aluminum wire but high tensile steel wire as well.

Press-fit type

WD960,WD970 type adopt original design which PCD is pressed into support ring after sintering to avoid horizontal crack while machining.

Back-supported type

Back Supported die can reduce the risk of horizontal crack on drawing hard wire.

■ Grades

F Grades

Ultra fine
（Extra-Fine:1μm）
It is suitable for drawing dies that require a high quality surface finish or high fracture strength.
S Grades

Fine
（Fine:3μm）
It is standard grade of small diameter die blanks with support ring.
M Grades

Middle
（Middle:5μm）
It is effective for a wide variety of applications offering high finish with good wear resistance.
C Grades

Coarse
（Coarse:12μm）
It is suitable for drawing dies that require a high wear-resistance.
E Grades

Extra-coarse
（Extra-Coarse:25μm）

Specification

Solid type

Self-supported die blanks WD700 series / Self-supported die blanks with thermal stability WD800 series

Scroll horizontally

ADDMA No.^*1	Cat. No.	Dimension（mm）		Concentricity (mm)^*2	Recommended maximum hole diameter (mm)^*3	Available grain size (μm)					Fig
		ød (mm)	t (mm)			F	S	M	C	E
		ød (mm)	t (mm)			1	3	5	12	25
D6	WD705□	2.5	1.0	–	0.5	●	–	●			1
D12	WD710□	3.2	1.5	–	1.0	●	–	●			1
D15	WD715□	5.2	2.5	–	1.5	●	–	●			1
D18	WD720□	5.2	3.5	–	2.0	●	–	●			1
D6	WD805□	2.5	1.0	–	0.5	●	–	●			1
D12	WD810□	3.2	1.5	–	1.0	●	–	●			1
D15	WD815□	5.2	2.5	–	1.5	●	–	●			1
D18	WD820□	5.2	3.5	–	2.0	●	–	●			1

●mark:Standard stocked item Blank:Made-to-order item Qmark:Not available
Ordering Method: For the Product number, please Available grain size [F,S,M,C,E] in the □ when ordering. ( e.g. WD705F )

Die size standard by American Diamond Die Manufactures Association.
Concentricity shows the difference between the maximum width and the minimum width of the carbide support ring.
The recommended maximum hole diameter (soft wire) assumes standard drawing conditions. It may be necessary to increase the size depending on the die hole shape, mount design, wire drawing material, wire drawing conditions, etc.

Supported type

WD900 series / Tungsten carbide supported die blanks with back support WD900MW series

Scroll horizontally

ADDMA No.^*1	Cat. No.	Dimension（mm）			Concentricity (mm)^*2	Recommended maximum hole diameter (mm)^*3	Available grain size (μm)					Fig
		ød (mm)	øD (mm)	t (mm)			F	S	M	C	E
		ød (mm)	øD (mm)	t (mm)			1	3	5	12	25
D12	WD910□	1.5	4.00	1.5	0.20	0.8	●	●	●			1
D15	WD915□	4.0	8.12	2.3	0.25	1.8	●	●	●			1
D18	WD920□	4.0	8.12	2.9	0.25	2.3	●	●	●			1
D21	WD925□	7.0	13.65	4.0	0.35	3.5	–	●	●	●		1
D24	WD930□	7.0	13.65	5.3	0.40	4.6	–	●	●	●		1
D27	WD940□	9.0	14.50	7.5	0.40	5.4	–	–	●	●		1
D27	WD945□	13.0	24.13	9.0	0.33	5.8	–	–	●	●		1
D30	WD950□	13.0	24.13	12.0	0.33	7.6	–	–	●	●		1
D33	WD960□	16.0^*5	24.13	16.0	0.33	10.5	–	–	–	●		2
D36	WD970□	19.0^*5	35.00	19.0	0.60	12.7	–	–	–	–	●	2
	WD975□^*6	25.0	42.00	20.0	0.60	15.7	–	–	–	–		1
	WD980□^*6	30.0	47.00	22.0	0.60	19.0	–	–	–	–	●	1
	WD990□^*6	40.0	67.00	25.0	0.75	25.7	–	–	–	–		1
	WD995□^*6	45.0	67.00	27.0	0.75	29.0	–	–	–	–		1
D12	WD910MW	1.5	4.00	3.0^*4 (1.5)	0.20	0.8	-	-		-	-	3
D15	WD915MW	4.0	8.12	4.3^*4 (2.3)	0.25	1.8	-	-	●	-	-	3
D18	WD920MW	4.0	8.12	4.9^*4 (2.9)	0.25	2.3	-	-	●	-	-	3

●mark:Standard stocked item Blank:Made-to-order item Qmark:Not available
Ordering Method: For the Product number, please Available grain size [F,S,M,C,E] in the □ when ordering. ( e.g. WD910F )
This product is used for wire drawing dies. Please refrain from using the product for purposes other than this. Failure to do so may result in unexpected damage or injury. Also, refrain from modifying the material as it may lead to unexpected malfunctions and injuries.

Die size standard by American Diamond Die Manufactures Association.
Concentricity shows the difference between the maximum width and the minimum width of the carbide support ring.
The recommended maximum hole diameter (soft wire) assumes standard drawing conditions. It may be necessary to increase the size depending on the die hole shape, mount design, wire drawing material, wire drawing conditions, etc.
The number of ( ) shows tentative thickness of diamond.
The upper diameter of diamond is different from the lower diameter.
The blank has the inspection hole(ø5 to 8mm) in the center.

■ Precautions for die machining

● Notice in Mounting

Do not use brazing method when mounting the Die. Uniform force should be applied to the cermet ring when mounting. Choose mount method when using WD900/WD900MW series.

● Precaution for mounting process

Die blanks should be placed at the center of SUS case.
Die blanks should be set parallel to the case.
Do not allow space between brazing alloy and blank.
(It is effective to apply pressure during heating or immediately after heating.)

● Precaution for use about shrink fit type (WD960, WD970).

WD960, WD970 type adopt original design which PCD is pressed into support ring after sintering to avoid horizontal crack while machining. PCD diameter is different each side. (about 3%

PCD is pressed into support ring in the direction from side A to side B. Please use as Side A is Bell side,and Side B is Exit side.
WD960, WD970 can use re-insertion to support ring when PCD slip out.
PCD and support ring are not combined so please keep the radial thickness of PCD more than 1.0mm.

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