Pottery wheel Profile

Pottery wheel, itself water, oil, acid, alkali corrosion, can well maintain the shape. ceramic diamond disc porosity and a large grinding rate, greater strength, toughness, elasticity, vibration, poor, poor to withstand lateral forces, vitrified pottery wheel applications the most widely used, can be made from a variety of abrasive for form grinding and thread grinding, gear, crankshaft, the most widely used

Methods in the stone grinding wheel applications

Grinding wheel is a cutting tool, which consists of many small and hard, abrasive and adhesive binders from the porous body. Abrasive cutting directly responsible for the work, sharp and must have a high hardness, heat resistance and a certain toughness. Commonly used abrasive alumina (also known as corundum) and silicon carbide two kinds. Alumina-based abrasive, high hardness, good toughness, suitable for grinding steel material. Type silicon carbide abrasive hardness higher, sharper, good thermal conductivity, but more brittle, suitable for grinding cast iron and tungsten carbide.
For the same stainless steel cutting wheel, because of its different thickness, surface roughness and processing efficiency is not the same after the workpiece, coarse grains for rough grinding, fine abrasive grains, the more rough abrasive grain size number smaller. Pengxiang Linyi Junan Abrasives Co., Ltd. is well-known wheel manufacturer, the production of the wheel, grinding wheel, get the praise of new and old customers!
Binding agents from bonded abrasive effect. Commonly used ceramic binders, followed by the resin binder. Different binders choice of materials, the impact wheel corrosion resistance, strength, heat resistance and toughness.
The more firmly bonded abrasive particles, the more difficult to fall from the wheel, the hardness of the wheel is said that the hardness of the wheel is the degree of difficulty of the diamond cutting discs surface under loads off. Easy to fall off called soft, otherwise known as hard. The abrasive grinding wheel hardness and hardness are two different concepts. Surface grinding of the workpiece is relatively soft, abrasive cutting edge (corner) on easy to wear, this time may be longer use abrasive, that some of the firm bonding optional wheels (high hardness of the wheel). Conversely, a low hardness grinding wheel for high hardness workpiece.
Job wheel at high speed, in order to ensure safety, should be checked before installation, there should be no cracks and other defects; in order to make the wheel steady, balancing test should be carried out before use.
After a certain time of the grinding wheel, the surface voids are clogged debris, abrasive acute angle will be blunt, the original geometry will be distorted. It must be trimmed in order to restore the cutting ability and the correct geometry. Required diamond grinding wheel dressing pen.

Wheel Handling Storage tips

1, must complete package transportation and collision avoidance can not be long-term bare moisture, does not contact with the bases;
2, neatly stacked flat way, not long diagonal and pressure, prevent deformation;
3, avoid direct contact with the ground, must Gechao wooden pallets stacked with care, 10-15cm ground clearance is appropriate, stacking height of not more than one meter;
4, first with the implementation of advanced principles to ensure the best use of the granite cutting disc product;
5, the product may use more than one year should be re-tested after rotation strength and appearance.

Wheel hardness selection

Wheel hardness refers to the degree of difficulty on the abrasive grinding wheel surface under the force of falling. Wheel hardness soft, abrasive grinding wheel showing off easily, the hardness of the ceramic diamond disc hard, showing off abrasive difficult. Hardness and abrasive grinding wheel hardness are two different concepts. With an abrasive wheel can be made of different hardness, which is mainly determined by the binding agent performance, quantity and wheel manufacturing processes. Significant differences are grinding and cutting wheel having a "self-sharpening", select the hardness of the stainless steel flap disc, in fact, choose self-sharpening wheel, hope still sharp abrasive grains fall off too early, do not blunt the not fall off .

Wheel storage and use of

Abrasive storage location should be chosen smooth and relatively dry place, room temperature should not fall below 5 ℃. Wheel should stand on the shelf is appropriate, do not pile up too high, so as not to crush and collapse. Wheel certificate and signs must be placed along the wheel together, to prevent confusion.
Rubber and resin sheet wheel, stack height should not exceed 160mm, and should be caught in the middle of a flat iron Guanghua, should pressure above a certain load, to prevent deformation of the tile cutting disc.
Resins and soft rubber wheel storage for more than one year shall strength test before re-use.
Wheel in the process of moving, non-scrolling, should be handled with care to prevent vibration and shock caused by a crack, Obscure, fragmentation, and so out of the side to try to ensure safety.
Wheel check carefully before installation, and struck with a wooden hammer wheel, depending on when it is installed to a grinder or stainless steel cutting discs flange tightening applications. Two flange outer dimensions must be the same.
Are there cracks or unusual sounds. Found an outer diameter of 150 mm and larger wheel mounted on the flange should be balanced after-hours, and then install the grinder to be corrected, amended should be balanced again before you can use the wheel cracked and hoarse voice, it is strictly prohibited to install grinder or grinder.

Wheel cleaning

With grinder grinding away the surface defect of the process, also known as abrasive cleaning. tile cutting wheels grinder manual and automatic two categories:
(1) Manual grinder. Including hanging grinder, portable grinder and trolley-type grinder. Manual grinder inefficient, labor-intensive for grinding shallow defects, used to clean up residual defect by automatic grinding machine after cleaning. But this grinder shape size small, cheaper equipment prices, simple to use, it is widely used.
(2) automatic grinding machine. Including fixed and movable automatic grinder. More efficient than a manual grinder high, but the equipment is expensive, the use of complex, large area. When using abrasive cleaning, the workpiece due to the sharp friction and produce local heating, prone to cracking after cooling. To prevent cracking, it must pay attention to the speed and pressure of the wheel when the metal grinding disc products; intermittent operation mode can also be used to facilitate the diffusion of heat were polished.

Wheel selection principles

1, good uniformity and no crack-like appearance is the basic look of high-quality wheel;
2, sophisticated anti-counterfeiting packaging and printing bar code is fake goods are factory products different distinction;
3, stainless steel cutting wheels static unbalance any value as low as possible, of course, difficult to produce greater;
4, cutting and grinding general rule is to iron less, low wear the wheel too hard to iron less wear big is bad materials, high intrinsic quality of wear as little as possible, to the maximum amount of iron, At the same time feel good;
5, for carbon steel, alloy steel, stainless steel, copper and aluminum materials, glass and stone, because of their tissue density and heat conditions are not the same, differ when it decided to choose the wheel; glass stone, on the market There are specialized glass stone cutting and polishing tools; copper and aluminum materials and stainless steel solid material thickness of the low number of applications or zirconium corundum substrate for cutting sheet or polished film; for cutting carbon steel, stainless steel profiles (non-solid) requires selection of high hardness Some of the stainless steel cutting disc will be greatly increased life expectancy; but solid bar, forgings and requires the wheel in hardness is not too high, otherwise it will cut does not move!

Several methods of dressing wheel

① diamond wheel dressing pen
Depending on the size of the diamond particles and different distributions in the pen, diamond pen into a chain, layered, arrayed and powdery several. Strong force from the days of using a combination of alloys as binder, the use of diamond particles not falling, until exhausted without intermediate grinding.
② rolling wheel dressing method
Rolling method wheel dressing, concrete cutting wheels speed by deceleration to 1 ~ 2m / s driven rolling wheel (made of metal, made of cemented carbide or abrasive) rotation.
Rolling wheels added to a pressure of about 3 ~ 5MPa the wheel, abrasive grinding wheel surface crushed or abrasive grains fall off. Rolling wheel dressing cutting method is better, lower cost, but is coarser grind the workpiece surface roughness, rolling tile cutting wheel wear, life is short, easy to lose precision. Therefore, this method is mainly used for trimming small quantities, less demanding precision profile grinding.
Trimmed wheel hardness uniformity is better, otherwise the wheel will produce local shape distortion.

Large pores wheel choice

Large pores wheel has easily be blocked, strong high durability and cutting ability, etc. during grinding. Suitable for soft metals and plastics, rubber and leather and other non-metallic materials, crude, refined. At the same time, it has a fast heat dissipation characteristics, so in grinding large number of heat-sensitive materials, thin-walled workpieces and dry milling processes (such as sharpening carbide cutting tools and machine tool guide, etc.) with good results.
Large pores stainless steel cutting wheel and manufacturing methods are generally vitrified grindstone essentially the same. The difference is in the ingredients plus a certain amount of pore former, it is completely evaporated or burned embers at the wheel before sintering, resulting in large pores.
Large pores wheel production range is: usually selected carbide and abrasive corundum, such as commonly used silicon carbide (C), green silicon carbide (GC) and corundum (WA) and other types of high abrasive hardness, resistance crisp and sharp, with good thermal and electrical conductivity; grit size (36 # to 180 #); binders (vitrified); hardness (G ~ M levels); shapes (flat-shaped, cup-shaped, bowl or dish shape, etc.); pore size (approximately 0.7 to 1.4 mm).

Cubic boron nitride (CBN) wheel selection

Cubic boron nitride (CBN) grinding wheel CBN particles stick only on the surface of a thin layer of an ordinary reflex wheel, which abrasive grains toughness, hardness, durability class corundum grinding wheels is 100 times, the most suitable for processing high hardness, tack Large, high temperature strength, low thermal conductivity and high speed steel hard grind or ultra-high speed grinding. Its scope of application and synthetic diamond plays complementary role. Diamond wheel when grinding carbide and non-metallic materials, has a unique effect, but in the grinding steel material, especially when grinding special steel, the effect is not significant. CBN grinding wheel steel wheel efficiency than corundum class higher in recent times, the wheel five times higher than diamond, but less than the diamond grinding brittle material.
Selection and choice of diamond grinding wheel tile granite cutting wheels is similar. But in the binding agent selection, most resin binder, followed by electroplating, metal bond. Vitrified CBN grinding wheel is mainly used for grinding titanium alloys, high-speed steel, malleable iron and other difficult to machine ferrous metals, resin bond CBN grinding wheel for grinding ferromagnetic material is ideal for machining steel. CBN grinding concentration is generally 100 to 150 using more economical, it can not use ordinary cutting fluids, which require special cutting fluid.