What are the advantages of Tiankuo Hammer

The hammer head is economical, affordable, easy to operate, and has a large crushing ratio. It is widely used in crushing various materials. The hammer head of the crusher drives the "hammer head" to run at high speed through the rotor, collides with the stone, cuts with the sieve plate, and forms the phenomenon of "stone hitting the stone" in the crushing cavity; ideal materials smaller than the screen hole or gap are discharged, but larger than the screen gap Or the materials in the gap continue to collide and cycle again and again. There are many factors that affect the wear of wear-resistant parts such as hammers and sieve plates, and increase labor intensity. It requires serious, pertinent, analysis of on-site working conditions to overcome treatment, and requires high-quality operators, diligent maintenance, and more observation. The following points are briefly discussed for reference only, please correct the errors as a thank you:
1. First of all, it is necessary to ensure that the quality of wear-resistant parts such as hammers and sieve plates are excellent, and the key elements are the selection and application of materials.
1. Hammers commonly used in China: forging, high manganese steel, alloy steel, high chromium, various inlaid or high chromium composite hammers. The hardness of forging is similar to that of high manganese steel hammer; alloy steel is 1.2-1.5 times stronger; high chromium (Cr20-28) has high hardness (HRC58-64), good wear resistance, but poor toughness and easy to break; inlaid (high The manganese steel inserts the circle, the square shape alloy rod) is not satisfactory. "Composite materials" is a relatively popular, popular and cutting-edge technology in the research and manufacture of wear-resistant materials industry in recent years. In the field of simple and rough mining hammer breaking, by comparison-----the effective metallurgical composite hammer of "high chromium molybdenum copper nickel alloy (Cr26MoCuNi) and carbon steel and alloy steel" (bimetal double liquid thermal composite) hammer The head, which combines high-hardness chromium-molybdenum-nickel alloy with strong and tough carbon steel (alloy steel), is currently recognized as a relatively cost-effective, excellent wear, safe and reliable material on the actual mine site. In recent years, it has been widely used in various metallurgy, building materials, chemical, coal and other industries, and the trend of updating wear-resistant materials has been rising rapidly (the first national standard GB/T26652-2011 was implemented on March 1, 2012). However, the quality of domestic manufacturing companies varies greatly, and the quality is too different.
2. At present, the traditional material of screen plate and guard plate is high manganese steel (Mn13, Mn13Cn2), and many crushing companies are also using recycled high manganese steel due to cost. In this kind of medium and fine material crusher, it can not play and achieve the characteristics of high manganese steel through material impact work hardening during use. It is better to use alloy steel (wear-resistant steel) that has been promoted by the country for many years, has a variety of grades, and has a clear national standard. Its hardness, wear resistance, and cost-effectiveness are more than that of high manganese steel*, and its life span is 1.5-2.5 times.
2. Learn to understand and observe the principle and performance of the hammer head of the crusher; use it correctly and treat it dialectically.
1. The hammer should be used early. *Use 1/3 of the cross section of the hitting part of the hammer once, and use 2/3 of the back side. In this way, it can prevent the hammer from wearing over half of the hammer from producing sharp angles and easily breaking; it can also make the striking angle of the wear surface and the material as close as possible to perpendicular, changing friction wear (heavy wear) to blow wear (light).
2. Screen more and grind less. Add more sieves before the crusher, and add a loop after the sieve to return the large pieces to the crusher. Don't expect to crush and shape them at one time; exclude stone surfaces, clay, impurities-etc. from the crusher, and do not repeat useless work; at the same time; It also reduces the pressure in the crushing cavity and also reduces wear.
3. Moisture, clay, excessive impurities, and mountain bark weeds will affect the flow of materials, become slippery, and thicken; and then buffer the impact of the hammer, block the sieve, increase the pressure, and make the discharge unsmooth; this affects the macro The above can affect the wear and tear is quite amazing. Wet wear is 10 times that of dry wear, and it has been recognized by the industry in the grinding body of ball mills.
4. The feeding must be balanced and even; the feeding and discharging must be unobstructed, smooth and ventilated; to ensure that no material accumulates in the crushing cavity. Otherwise, the hammer head will be buried in the accumulated materials, increasing the wear surface and wear coefficient; the pressure in the crushing cavity will gradually increase, and the discharge can only be squeezed by the movement of the hammer head, thereby increasing wear in all aspects.
5. The hammer head rushes forward and the material moves backward. The water component squeezes the material to both sides of the crushing cavity. This causes the hammer heads at both ends to wear out more severely than the middle hammer head, and at the same time accelerates the wear of the side guards. Therefore, it is necessary to use the hammer cushion ring to install the side hammer as far as possible.
6. The adjustment of the size and shape of the sieve hole is also exquisite, and it should be combined with the crystal structure of the material ores; the non-sieve plate leaks faster than the sieve plate, the long sieve hole leaks faster than the square hole, and the square hole sieve plate is faster than the square hole. The garden hole is fast.
7. The gap between the hammer head and the sieve plate should also be adjusted. It is advantageous to use long and short hammers together.
8. Sometimes speeding up or adjusting the speed can also play a role in changing friction and combat wear.