1,most types of crushers
Hammer design plays a significant role in crusher efficiency because, in most types of crushers, the hammers do most of the work. Early hammer designs were only concerned with mass and general shape of the hammer. Today the technology of Pennsylvania hammers is highly developed, and we give careful consideration to a great many factors:
Location of the hammer’s center of gravity The center of gravity determines the focus of impact, which in turn helps to control the amount of impact and the general shape of the shattered particle. The center of gravity must be controlled to utilize the full mass of the hammer against the feed.
Air paths created by hammer rotation The air paths created by the hammer sweep usually contain a certain amount of fines and other small particles which must be directed away from the hammer shanks and rotor discs; otherwise, premature wear would occur. Pennsylvania hammers are designed so that the resulting air paths are directed toward open areas of the crushing chamber, away from vital parts.
Edge configuration of the hammer head The edges of each hammer face are shaped to a special geometry in order to produce maximum hammer life with the lowest amount of friction.
Heat treating Hammer hardness is the most essential factor in determining hammer life, for while the hammer head must be extremely hard and resistant to wear, the shank must be more ductile in order to absorb shock. To produce this on certain designs, Pennsylvania uses a special method of heat treating that creates a gradually varying hardness between the shank and the tip, without any abrupt changes. However, in cross section, the hardness extends for the full depth instead of merely the surface. Hammer hardness is normally gauged according to the Brinnel method.
As a result of continued improvements, hammer design plays a major role in producing high efficiency and in reducing maintenance problems. As the company introduces refinements to the hammers, users are provided with the latest designs as part of their normal resupply orders.
granite stone crusher plant machine parts :
1,we can supply crusher hammer head with good quality and competitive price;
2,we have more than ten years experience;
3,all the wear resisting alloy parts produced according to your drawing design.
In cement industry, the beater pulverizers are used universally, their hammerheads are made of high wear resistant materials of vanadium-molybdenum alloys. In this kind of alloys, the microstructure is refined and the columnar grains are fewer, in addition, the carbides shape as globular, which further optimize the performance and increase the wearing resistance. Experiments shows that the wearing resistance of vanadium-molybdenum alloys is 1.5-1.8 times higher than that of general high-chromium cast iron.
Hammer beam is made of low-alloy, which is excellent both in intensity and toughness while hammerhead is made of wear resistant material. We make full use of the advantages of these two kinds of materials, combine them by composite technology, which enlarges the applied range of wear resistant materials and prolongs their lifespan enormously.
Maanshan City hudong wear-resistant alloy Co, Ltd.
(China Huadong institute James Bond), is the largest producer in East China professional factory wear-resistant alloy products.
The main production: Foreign concrete mixing plant, asphalt mixing blades, liner, stirring arm, paver impeller; crusher board hammer ,hammer ;steel plant heat-resistant alloy wear parts and others series products are widely used in building buildings, bridges, roads airports terminals ,nuclear power and others utilities construction. In addition, participated in Beijing-Kowloon Railway, Three Gorges Project, and Qinshan Nuclear Power Plant. , Beijing Olympic venues and other large key construction projects.
The especially high nickel alloy developed by our company, superior to similar products, can replace the similar alloy products produced in America, which are, ESP. Suitable for large-scale mixers. They are exported to Japan, Hong Kong and Southeast Asia. It is the key enterprise for our country to resist foreign currency outflow and replace the imported products. Anhui output reaches ten thousand tons, occupying 75%domestic market. It can achieve both good social and economic benefits.
Our company attaches importance to the input of technology and management, having more than 20 technicians with high level, introducing systems of development strategy, standard management, and human resources management, marketing management etc. and has passed ISO9001-2000 quality system certificate.
Keeping up with the times, our company always endeavors to do still better creatively and with credit. We firmly carry out the idea of to win the customer and credit-orientation and create beautiful future for all the customers in both domestic and foreign countries.
if you have any demand,please send drawing or photo.so that we can give a reasonable price
We sincerely hope to cooperate with customers from all over the world.if you are interested in our products,kindly contact me.i’ll do my best to help you in any way I can,and quickly reply you within 24 hours.