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How to improve the service life of the die - wire drawing die
Release time:
2020-04-07
The cemented carbide die is made of cemented carbide. Cemented carbide belongs to tungsten cobalt alloy, and its main components are tungsten carbide and cobalt. Tungsten carbide is alloy; Skeleton", It is mainly hard and wear-resistant; Cobalt is the binding metal and the source of alloy toughness. Therefore, compared with alloy steel dies, carbide dies have the following characteristics: high wear resistance, good polishing, low adhesion, low friction coefficient, low energy consumption, and high corrosion resistance. These characteristics make carbide wire drawing dies have a wide range of processing adaptability, and become the most widely used wire drawing dies today
The cemented carbide die is made of cemented carbide. Cemented carbide belongs to tungsten cobalt alloy, and its main components are tungsten carbide and cobalt. Tungsten carbide is alloy; Skeleton", It is mainly hard and wear-resistant; Cobalt is the binding metal and the source of alloy toughness. Therefore, compared with alloy steel dies, carbide dies have the following characteristics: high wear resistance, good polishing, low adhesion, low friction coefficient, low energy consumption, and high corrosion resistance. These characteristics make carbide wire drawing dies have a wide range of processing adaptability, and become the most widely used wire drawing dies today.
Carbide wire drawing die is an important die for producing metal wire rod. Its quality directly affects the quality of wire rod, the loss of die and the economic benefits of product production. In the quality of the drawing die, in addition to the material of the die core, the perpendicularity of the die hole center and the die outlet end, the hole structure of the die hole is a key factor affecting the quality of the drawing die. The die hole structure and the size of each part are the key parameters of the die quality. If the pass structure does not meet the design requirements, it will seriously affect the life of the die and the drawing speed of the wire drawing machine. This requires the manufacturer to grasp these parameters in time during the mold production process, so as to carry out necessary grinding correction and improve the product quality.
In order to improve the service life of the carbide drawing die, the following points should be paid attention to during the selection and use:
1. Reasonable selection of mold brand
According to the physical and mechanical properties of the material and the size of the material, the mold brand shall be reasonably selected. For example, YG6 or YG8 is selected in the case of reinforcement, non-ferrous metal wire or bar with tensile diameter less than 20mm; YG8 is selected for 20-50mm; Select YG11 and YG15 for more than 50mm.
2. Check the wire drawing machine in time
3. Clean the wire properly
Before wire drawing, the surface of wire rod should be properly cleaned, otherwise it is easy to reduce the service life of the die, and also easy to produce scratches on the wire rod, affecting the surface quality.
4. Select the correct lubricant
Only high-quality lubricants, such as wire drawing powder, can improve the service life of the drawing die.
5. Lubrication protection
The service life of the drawing die can be improved only by properly cooling the hard alloy die and lubricating the working area, especially the high-speed drawing die.
6. Choose a reasonable compression ratio
The reasonable compression ratio shall be selected according to the size and performance of the drawn material. The selection of compression ratio is too small, resulting in high production cost; If the compression ratio is too large, the service life of the die will be reduced, even the die will burst.
7. Pay attention to control the surface condition of metal materials
In the process of drawing, if it is found that metal particles are adhered to the inner hole of the mold, which causes scratches on the metal surface, the machine should be stopped immediately to remove the adhered metal particles and polish the inner hole of the mold. The metal particles adhered to the inner hole shall be carefully cleaned after each use.
8. Regularly check the mold
Check the mold regularly to find the metal particles adhered to the inner hole in time.
9. Keep the mold properly
Take good care of the wire drawing die, and apply anti-rust oil for protection if it is not used temporarily.
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