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We usually use knives, graters, scissors, pencil sharpeners, a saw, and so on in our daily life for cutting. Do you know how these products are manufactured?
They also are made of cutting tools. These cutting tools share a common property which is that they all change the shapes of things by cutting and producing chips.
As we know, cutting tools are tools that cutting things to acquire the desired shape, cutting tools in our daily life cut fruits, vegetables, and wood. But the cutting tools produced by Zhuzhou Xinhua cemented carbide industrial co.Ltd cut harder materials such as steel, stainless steel, cast iron.
MANUFACTURING PROCESS OF CARBIDE TOOLS
Let's see the manufacturing process of carbide.
First, mix tungsten carbide with cobalt to make powder which can be classified as raw materials. The granulated mixture is poured into a die cavity and pressed. It gives a moderate strength like that of chalk.
Next, the pressed compacts are placed in a sintering furnace and heated at a temperature of about 1400°Resulting in cemented carbide.
After sintering, the content volume shrinks considerably.
Also, the hardness of cemented carbide is at a level between diamond and sapphire and its weight is about twice as iron.
Then, how do we cut this hard cemented carbide?
The figure on the right shows the condition of a cutting edge during machining. The cutting edge cuts the workpiece and chips are produced. The temperature at the top of the cutting edge becomes as high as 800°C because of impact and friction.
Cemented carbide grades that can withstand these high temperatures are the most successful.
Carbide formed into different configurations is the most popular, and they are called indexable inserts. Indexable inserts are used for various shapes of holders and selected according to the shape of the workpiece and cutting mode.
External holder and internal boring bar produce round-shaped workpieces. Machining processes that use holders or boring bars are called turning, and their main characteristic is that workpieces rotate.
The machine used for turning is called a lathe.
The tool in the photo on the right is a milling tool. Milling tools can be divided into two types; one is face milling which machines the workpiece surface and the other is end milling which performs slotting shoulder milling etc... Machining modes that use face mills and endmills are called milling operations and its main characteristic is that the tools rotate. The machine used for milling is called a milling machine.
The photo on the right is a tool that produces circular holes in workpieces and is called a drill. Indexable insert type drills and brazed drills produce relatively large holes and solid drills produce smaller holes. The main characteristic of drilling is that it can be used for both milling and turning machines.
As mentioned above, the cutting mode is composed of three main styles; turning, milling, and drilling. By choosing an appropriate cutting tool according to the cutting mode, hard metals can be machined efficiently.
Today cemented carbide tools have become a primary means for increasing metal cutting productivity, while research constantly develops new products for more accurate and faster machining to reduce manufacturing costs.
Zhuzhou Xinhua Cemented Carbide Industrial Co Ltd is located in zhuzhou city, the largest cemented carbide products manufacturing center in Asia. We manufacture all kinds of carbide inserts for more than 20 years with good quality and pretty competitive price.
If you have any inquiry or questions, pls feel free to contact 86 181 0733 2178 or email [email protected]