Daily Archives: May 8, 2017

What are Metal Bond Grinding Wheels and What Benefits Do They Offer?

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Extensively used in manufacturing diamond grinding wheels, metal bonds are manufactured utilizing three different processes: cold press, semi hot press and hot press modes.

Metal Bond Grinding Wheel
Cold press mode involves pressing the transition layer (no diamonds) and the working layer (with diamonds) of selected diamond portions to forms that on the body of the grinding wheel. These segments are then allowed to interconnect with the grinding wheel’s body via slots or teeth. Finally, cold press grinding wheels are placed into sintering furnaces where they are sintered without press.

 

Semi hot press mode improves on the cold press mode by complementing the sintering process. While grinding wheels are sintering in a furnace, applicable molds are applied and minimal to moderate pressure is added. However, any pressure applied is significantly lower than the amount of pressure applied in hot press mode.

 

Hot press mode directly sinters diamond particles in molds under preset pressure levels in sintering press machines. Diamond segments are then affixed on the grinding wheel using high frequency laser welding, high frequency welding or mosaic methods of mechanical welding.

 

Metal bond grinding wheels are produced when powdered metals or compounds containing cubic boron nitride or diamond are sintered on the wheel, resulting in exceptionally strong tools that maintain shape during rigorous use. In addition, metal bonding extends the life of grinding wheels by reducing the need for repeated dressings and continues being productive longer than market-brand super abrasives.

 

Benefits of Using Metal Bond Grinding Wheels

  • Because metal bond grinding wheels are sintered with cobalt, copper, mill, silver or stanum power, they work exceptionally well on a variety of surfaces (glass, refractories, ceramics, silicon, semi-conductors and quartz).
  • Whether used for tool cutting, glass grinding, ceramic grinding or form cutting, metal bond grinding wheels provide the longest, most superior quality of service before any type of maintenance is needed.
  • Metal bond offers the ability to perform outstanding interrupted cuts while retaining the tool’s original dimensions even during the most energetic grinding actions, including centerless, cylindrical, creep feed, deburring and cutoff applications.
  • Although resin bonds are more commonly used than vitrified or electroplated bonds, these bonds do not offer the hardness or wheel retention properties exhibited by metal bond grinding wheel.

 

As one of the most frequently seen machines in manufacturing plants requiring grinding applications, centerless grinders especially benefit from metal bond grinding wheels because of the slow, precise pace of material removal method demanded of these machines. Additionally, super abrasive centerless grinders necessitate powerful wheels such as metal bond grinding wheels that can effectively make predetermined alterations to products while reducing quality control issues that may arise if lesser quality wheels are used.

 

Best Diamond Industrial Co., Ltd. is the professional manufacturer of metal bond grinding wheel & CBN wheels. If you are interested in learning more information about grinding wheels or related products, welcome to contact with Besdia directly!

 

 

Article Source: http://blog.cdtusa.net/what-are-metal-bond-grinding-wheels-and-what-benefits-do-they-offer

Something You Need to Know about Height of Volleyball Nets

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The height of volleyball nets varies depending on the age group that is playing Volleyball. Logically, the net height is considerably lower for the younger players and it gets taller as the age group grows. Also, the net height for women is slightly lower than that for men’s volleyball, because females are typically smaller in height. The net is positioned at a height regardless of your age that requires a reasonable jump to get above it (unless you are unusually tall). For a tall Volleyball player, usually they can just reach the top of the net without jumping, but you wouldn’t be able to block or hit the ball over straight down without jumping.

 

What this means is that you need to learn to jump as high as possible. In fact, the taller that you can reach the more chance you have of getting the ball down on the opponent court. Some of the tall players in volleyball are able to jump up a meter in the air, meaning that their total reach is often near 3 and a half meters! The full net height for males is 2.43 meters, and for females it is 2.24 meters. The net height is adjusted by loosening the net with the winch, undoing the pin that goes through the net pole, sliding the net up and then fitting the pin in again. From there, you simply wind the net back up so it is taught.

 

You might think that just because you aren’t tall that you have no chance of being a good spiker. In experience, those that are smaller have bigger jumping abilities, meaning that they have about the same height jump as someone who is tall. Of course, being tall has its advantages for blocking and spiking. You can always increase your vertical jump, but you aren’t always able to grow more!

 

Check out Holyhoe’s volleyball nets for selection. Holyhoe provides the complete solutions for the sports’ nets and accessories and we have been supplying high quality products to the international customers around the globe. Welcome to contact us to learn further details about volleyball nets!

 

 

Article Source: http://EzineArticles.com/5670379