Spade drill countersink drill Counter bore drill Countersink Drill Bit Set

一， Product Information

Super-hard processing of professional, special, non-standard, special shaped and new  products with any kind, any shape and tolerance.

※If you have any similar inquiry, please fax us your address or call us to get samples in the photos and related catalogue for your reference (only a small amount is allowed). ※

We keep around RMB 30～40 Million turnover stock articles such as raw material ,semi-     products, finished products in ordinary year , we are capable to produce according to     drawing or sample provided by customer, so as to present you a favorable cost-performance  ratio…Welcome to visit our factory.

二，Products Description 

(Super-hard drill bits for high hardness application)

For other size specification and special micro-diameter, forming compound tooling, we can process according to drawings or samples.

Machining case: φ8.50 mill diameter (emulsified liquid), SKD11（HRC62°）,rotation speed 1600r/min, f≤199mm/min,

depth of drilled hole≤2.5*φD(mill Dia.), Precision of processed work piece ≥h9, surface finish more than Ra1.6

Extra hard small diameter: mill Dia. φD （φ0.10-φ2.00mm）, applicable for machining of quenched steel of HRC≤62° and various high hard materials, compound materials, the depth of drilled hole ≤6*φD（mill Dia.）

Referencing to the page footer, please provide your sample and specify the detailed specification, material type, size tolerance, drawing of semi-product and finished product, applied equipment, equipment value (RMB, to judge its market value  is rigid or floating), monthly consumed quantity, type of original product and its deficiency, when you make inquiry. What is the processed material and its HRC? Work piece drawing and notes, and please supply us new and old bestperformed samples.

Samples: Is it easy to blunt or break or other problems?

LZQ is possessed of cutting-edge & comprehensive production system, as well as rich producing & machining capability with different precision technology, so as to realize high efficiency application.

三，Material / Characteristics  

HRF 10 (For super high wear-resistant):

Ultra micro-grain quality carbide is ultra high wear resistant, but less impact-resistant. It is applied in mid and low speed light cutting of various materials that require ultra high wear resistance. Generally, it is applied in good work condition, stable cutting, good part fixture and continuous light-duty machining. Comparing with general tungsten steel, it has more than 4~6 times lifetime. Corresponding to ISO K10~K25/P10~P25.

VRA201:

Imported ultra micro-grain quality carbide, with excellent impact-resistance and general wear-resistance. Generally applied in worse or general equipment to machine materials of lower hardness （HRC≤25°）, discontinuous cutting and worse part fixture. Conforming to ISO K25, can replace machining of materials like M42, ASP60, MPM, HSSCo10 etc, and can get 4-6 times lifetime, it has higher performance/price ration. Comparing with SKH51, it has 15-25 times lifetime and durability.

ASP60A :

mported ultra high wear-resistant high-grade high cobalt powder steel, quenched:HRC70°±2°, with excellent wear resistance and impact resistance. Comparing with HSSE\HSS-AL and HSSCo, it has 4~8 times lifetime, and can guarantee uniformity and conformity rate of machined products. It is often applied in general equipment for machining various materials including Ni\Cr\Mo\Si\Ti) that are hard to machine like high alloy\heat-resistant alloy\cast iron of nickel-vanadium-titanium alloy\stainless steel. It is excellent machining tool before heat treatment. It has excellent high temperature machining and comprehensive performance, and allows higher cutting speed. The higher the hardness of machined materials, the more remarkable the effect. Because its roughness is not so good, it is not suitable for discontinuous cutting or for using under processing system of insufficient rigidity, otherwise, cutter will be hit or chipping will happen.

PR40：

super micro-grain diamond tungsten steel, extensively applied, it can be applied in medium speed cutting and finish cutting of various materials with HRC≤28°. It has excellent impact resistance and general wear resistance, and has extensive application. Generally, it is applied for thicker cutting, discontinuous cutting and bad part fixture. After being coated, it has better result, can machine various materials of HRC50°. Comparing with ISOK20&general tungsten steel, it has 1-2 times lifetime and excellent wear resistance