Literal statement:

HJDK600 Inner Cooling Twist Drills for General Purpose

Carbide drills provide faster cutting rates, longer tool life, better positional and dimensional accuracy and improved surface finish. Slot and pocket milling often creates chip evacuation problems, especially on vertical machining centers. Re-cutting chips can cause End mill failure.  Coolant-through end millshelp evacuate chips from the cutting zone. This eliminates the problem or re-cutting chips. 

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.

Regular size:

We can produce 3D,5D, 8D drills according to customer's requirements or nonstandard drills as customized. We could also produce nonstandard end mills as customized. 

Tool material composition:
1. Physical Properties:
a. Hardness greater than or equal to 92.8 HRA；
b. Density greater than or equal to 14.2g/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；
3. It's proposed cutting less than 60HRC.

Coating:
Nano Coating AlTiN
Characteristics and Function
1、High aluminum content provides excellent hot hardness and oxidation resistance.
2、Special method optimizes the structure of coating,significantly improved stability,reducing the number of surface droplet.

Operation parameter:

Attention:

Make sure work peice 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.

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.