Cemented Carbide Coating Introduction

Thread cutter cemented carbide coating has physical vapor deposition (PVD) and chemical vapor deposition (CVD) two methods. The former is common used with TiN, TiCN, TiALN and its composite coating.Solid cemented carbide taps, solid carbide thread milling cutters and solid carbide cutting tools, and methods can be used as needed PVD coating. Carbide inserts the use of chemical vapor deposition (CVD) method for coating.

The cemented carbide coating had appeared in early 1960s. By chemical vapor deposition (CVD) process, the cemented carbide surface is coated with the refractory metal carbides in one or more layers (5μm ~ 13μm). Good overall performance, good toughness of the matrix strength alloy coating, surface wear-resistant, high temperature. But the coated carbide degree of sharp edge chipping resistance is less than ordinary carbide.

Cemented carbide composition and performance

Cemented carbide is a tungsten carbide hardness and high melting point (known as the hard phase) and a metal (called the binder phase) made ​​by powder metallurgy process.Tungsten carbide tool commonly used carbide such as WC, TiC, TaC, NbC. The adhesive generally used is Co; titanium carbide-based adhesive is Mo, and Ni. Tungsten carbide physical and mechanical properties depend on the alloy composition and thickness of the powder particles as well as alloy sintering process. More hard phase of high hardness and high melting point Contains, the higher the hardness and high-temperature hardness of the alloy. Containing the more binder, the higher strength is.

Cemented carbide threading tools introduction

Cemented carbide threading tools is processing tools of internal and external threads. It can be divided into Cutters class cutter, broach and thread rolling tools. Representative wider application Taps.


Thread is widely used in many aspects of the various transmission mechanisms, fastening parts and measuring tools,. Because of its different uses, its shape, precision finish also has different requirements. , The processing method and the tool also vary depending on the shape of the thread finish, accuracy and the production batch.

Face cemented carbide milling cutter introduction

Face cemented carbide milling cutter suitable for machining grooves and order countertops. The facecemented carbide milling cutter addition to the circumference having a main cutting edge, the side surfaces are also the secondary cutting edge, thereby improving the cutting conditions, and to improve cutting efficiency and to reduce the surface roughness, but the thickness dimension larger changes after regrinding. Straight teeth face cemented carbide milling cutter can be divided into the wrong tooth and insert face cemented carbide milling cutter.

Keyway cemented carbide milling cutter introduction

Mainly used for processing round closed keyway. There are two cutters, the cylinder surface and the end surface has a cutting edge, the end face cutting edge until center, working along the axis of the feed movement. According to national standards, d = 2 ~ 22mm, straight shank keyway cemented carbide milling cutter taper shank keyway milling cutter diameter d = 14 ~~ 50mm. The keyway cutter diameter precision grade e8 and d8 are usually processed separately the H9 and N9 keyway. The peripheral cutting edge of the keyway cutter wear occurs close to the end face of the short length only. The regrinding simply grinding the face cutting edge cutter diameter unchanged.

Cemented carbide end mill introduction

Cemented carbide end mill can be divided into integral and indexable. The typical diameter d = 3 ~ 20mm made integral, diameter d = 12 ~ 50mm made indexable.

Indexable end mills according to their structure and purpose can be divided into common type, drilling and milling-type spiral tooth. Smaller diameter indexable end mills, clamp the blade space occupied by a very limited, so generally use the pressure-hole. It can be divided into paperback Road piece pressure hole and stand-mounted blade pressure hole type.

How to choose cylindrical cemented carbide milling cutter

Cylindrical cemented carbide milling cutter is used for the machining plane. It can be divided into coarse teeth and fine teeth two kinds. The coarse toothed cylindrical cemented carbide milling cutter has less number of teeth and the strength of the cutter, the chip space, regrinding times for coarse plus. Fine-tooth cylindrical cemented carbide milling cutter many teeth, smooth, suitable for finishing.

Choice of cutter diameter, should have sufficient rigidity and strength to ensure that the cemented carbide milling cutter spindle, the tooth enough chip space, select a smaller value as possible under the conditions of multiple regrinding. Otherwise, the milling power consumption, the cemented carbide milling cutter cut long time, thereby reducing the productivity. Usually select cemented carbide milling cutter diameter according to their milling parameters and cemented carbide milling cutter spindle.