Tungsten carbide center drills

description:

HJDK650 Tungsten carbide center drills for drilling steel, stainless steel, cast iron, non-ferrous material. Lip chamfer, higher feed rate, higher efficiency.

HJDK650 Tungsten carbide center drills

Suitable for drilling steel, stainless steel, cast iron, non-ferrous material.

Hardness HRA92.8

Material : tungsten carbide

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PRODUCT DETAIL

HJDK650 series-center drills

Literal statement:
HJDK650 center drill realize a good combination between chip flow at drill portion and that at countersink portion. Their flutes can fully accommodate chips and work well to eject the chips.center drills have the cutting edges on both ends, and have spiral flutes.Owing to good chip ejection, such troubles become less as the tools break due to chip clogging.Considering drill strength, we have minimized the drill length. Further to compensate the weakness at connecting point between drill and countersink, the connecting point has R which radius is within the back-taper of the drill. They also have a wide line-up.

Features:

Suitable for drilling steel, stainless steel, cast iron, non-ferrous material.
Stub chisel,excellent self-center capability.
Radial point, smaller cutting resistance.
Lip chamfer, higher feed rate, higher efficiency.

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Regular size:HJDK650 Fine Powder Center Drill Series

Ordering code	Diameter	Angle	Flute length	O.A.L.	Shank Dia.
HJDK650-0102	1	60°	1.5	35	4
HJDK650-0202	2	60°	2.5	50	5
HJDK650-0252	2.5	60°	3 1	60	6.3
HJDK650-03152	3.15	60°	3.9	70	8
HJDK650-0402	4	60°	5	80	10
HJDK650-0502	5	60°	6.3	80	12
HJDK650-0632	6.3	60°	80	80	16

Tool material composition:
1.Physical Properties:
A) Hardness greater than or equal to 92.8 HRA；
B) Density greater than or equal to 14.2 g/cm³；
C) TRS greater than or equal to 4200 N/mm²；
D) Free of ETA phase condition；
E) No contamination by other materials；
F) Porosity = A00 / B00 / C00 ；
G) Uniform and consistent grain size. No grain size can be larger than specified.
H) Chromium carbide grain growth inhibitor only.
2.All the tools of production, coatings are used in Germany, Switzerland, processing equipment；

Operation parameter:

Center drilling Operation parameter:
Workpeice material	Cutting speed	Feed rate (mm/rev)
Workpeice material	(m/min)	D4	D6	D8	D10	D12	D14	D16	D20
Low carbon steel, long chip （<125HB）	130	0.12	0.14	0.16	0.18	0.2	0.24	0.28	0.32
	100	0.15	0.17	0.2	0.24	0.26	0.3	0.34	0.38
	60	0.18	0.2	0.26	0.3	0.32	0.35	0.4	0.45
Low carbon steel, short cut, easy cut steel （<125HB）	120	0.1	0.14	0.16	0.18	0.2	0.24	0.28	0.32
	100	0.14	0.16	0.2	0.24	0.26	0.28	0.34	0.38
	60	0.18	0.2	0.24	0.3	0.32	0.34	0.4	0.45
High carbon steel and medium carbon steel （<25HRC）	110	0.1	0.12	0.14	0.16	0.18	0.2	0.22	0.26
	80	0.13	0.15	0.18	0.2	0.24	0.26	0.28	0.32
	60	0.16	0.18	0.22	0.24	0.3	0.3	0.32	0.4
Alloy steel, tool steel （<35HRC）	110	0.1	0.12	0.14	0.16	0.18	0.2	0.22	0.26
	80	0.13	0.15	0.18	0.2	0.24	0.26	0.28	0.32
	60	0.16	0.18	0.22	0.24	0.3	0.3	0.32	0.4
Alloy steel, tool steel （35-48HRC）	100	0.1	0.12	0.14	0.16	0.18	0.2	0.22	0.26
	80	0.12	0.14	0.16	0.2	0.24	0.26	0.28	0.32
	60	0.16	0.18	0.2	0.24	0.3	0.3	0.32	0.4
PH and ferritic, martensitic steels （<35HRC）	100	0.1	0.12	0.14	0.16	0.18	0.2	0.22	0.26
	80	0.12	0.14	0.16	0.2	0.24	0.26	0.28	0.32
	60	0.16	0.18	0.2	0.24	0.3	0.3	0.32	0.4
Gray iron（<32HRC）	140	0.12	0.17	0.2	0.25	0.26	0.28	0.3	0.32
	120	0.2	0.26	0.32	0.3	0.32	0.32	0.36	0.38
	60	0.26	0.32	0.4	0.36	0.38	0.4	0.42	0.44
Alloy iron of medium processing difficulty, nodular cast iron （<28HRC）	130	0.12	0.15	0.17	0.2	0.22	0.24	0.26	0.3
	105	0.18	0.2	0.22	0.26	0.28	0.3	0.32	0.36
	60	0.24	0.27	0.3	0.32	0.34	0.36	0.38	0.42
Intractable high alloy cast iron, nodular cast iron （<28HRC）	120	0.1	0.1	0.13	0.15	0.17	0.19	0.2	0.28
	90	0.16	0.13	0.17	0.2	0.22	0.26	0.27	0.29
	60	0.22	0.16	0.21	0.26	0.28	0.31	0.33	0.35
Wrought aluminum alloy （Si<12%）	150	0.12	0.17	0.2	0.25	0.26	0.28	0.3	0.32
	120	0.2	0.26	0.32	0.3	0.32	0.32	0.36	0.38
	60	0.26	0.32	0.4	0.36	0.38	0.4	0.42	0.44
Cast aluminium alloy （Si<12%）	150	0.12	0.15	0.17	0.2	0.22	0.24	0.26	0.3
	120	0.18	0.2	0.22	0.26	0.28	0.3	0.32	0.36
	60	0.24	0.27	0.3	0.32	0.34	0.36	0.38	0.42
Cast aluminium alloy （Si>12%）	150	0.1	0.12	0.14	0.16	0.18	0.2	0.22	0.26
	120	0.13	0.15	0.18	0.2	0.24	0.26	0.28	0.32
	60	0.16	0.18	0.22	0.24	0.3	0.3	0.32	0.4
Copper, copper alloy （<200HB）	150	0.1	0.12	0.14	0.16	0.18	0.2	0.22	0.26
	120	0.12	0.14	0.16	0.2	0.24	0.26	0.28	0.32
	60	0.16	0.18	0.2	0.24	0.3	0.3	0.32	0.4

Attention:

Make sure work piece and machine are stable and use a precision holder, use hydraulic chucks, high quality collet chucks.
Make sure total indicated run-out(TIR) is less than 0.02mm.
The recommended cutting condition is suitable for apply water soluable.
If the tool size is not in the table. Please refer to the table closet to the blade diameter size selection of cutting parameters, adjust cutting parameters according to actual working conditions during processing.

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The company has a complete blade manufacturing process equipment production line from powder raw material preparation, mold making, pressing, pressure sintering, grinding, coating and coating post-treatment. It focuses on the research and innovation of the base material, groove structure, precision forming and surface coating of carbide NC inserts, and constantly improves the machining efficiency, service life and other cutting properties of carbide NC inserts. After more than ten years of scientific research and innovation, the company has mastered a number of independent core technologies, has independent R&D and design capabilities, and can provide customized production for each customer.

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HJDK650 Tungsten carbide center drills

Tungsten carbide center drills

description:

PRODUCT DETAIL

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