Intelligent detection of metal cutting wheel industry needed

The tool known as cutting tools, mechanical manufacturing a tool for cutting machining, in accordance with terms of use, and  PINEZONE zirconia flap disc can be used for cutting sheet metal, wood, stone and the like. Metal cutting tools for machining metal products, and therefore used the material is very strong, kind of cutting tool that is part of the production of raw materials previously blades are generally high-speed steel, tool steel, and later developed into today's super-hard materials such as carbide, ceramics, diamond, cubic boron nitride, such tools are also widely used in the aerospace, automotive, marine, mechanical processing, oil mining and so on.
From hair products to the development trend, our tool industry is facing a transition from low-end products periods, automotive, mold, aerospace and other industries of high precision, complex tool tip will be  PINEZONE portable belt the main direction of China's modern and efficient production tool next few years, metal cutting tool industry will usher in its period of rapid development. With the arrival of the "Twelve Five" period, the industry will show a crowded competition of the state. As we all know, metal cutting tools to detect problems plagued the industry for many years, the quality of accidents occur several times, the urgent need to improve the quality level. Behind the rapid development of enterprises are keenly aware that, with the metal cutting tools are widely used in daily life, the quality of related products is critical to the enterprise, its quality problems are facing a severe test. It is reported that  PINEZONE sanding roll domestic testing equipment suppliers to invest a lot of energy, committed to the development of high-end testing equipment to achieve fast, accurate and efficient detection. The next few years, intelligent detection will dominate the production of metal-cutting tools, and to replace the traditional quality mode.
The cutting blade is a core part of the tool, production testing situation is particularly critical.

nonwoven belt Knowledge Analysis: The use of the difference of several nonwoven belt

According to various non-woven production process can be divided into : 1 , spunlace : is a high pressure water jet to fine one or more layers of fiber web, the fibers are entangled with each other , so that the fiber network to be reinforced and 2 have a certain strength , heat sealing PINEZONE PSA sanding disc  woven : refers to adding fibrous webs or powdered hot melt adhesive reinforcement materials, fiber network and then cooling the heated melt into the fabric reinforcement . 3 , pulp airlaid non-woven fabric : can be called wipes, dry paper non-woven fabrics . It is the use of airlaid technology will open pine wood fiber into a single fiber state and then the fiber agglutination method using flow on a net curtain , fiber network and then into the fabric reinforcement . 4 , wet nonwoven fabric : is placed in an aqueous medium loose fiber material into individual fibers open , while the mixing of different fiber raw materials , fibers made ​​from the pulp suspension , the pulp suspension supplied to a network organization , the fibers in the wet state PINEZONE Bonded abrasives  then laid into the fabric reinforcement 5, the spunbond nonwoven fabric : after the polymer has been extruded and stretched to form a continuous filament, the filament is laid to the network , then through its own web bonding, thermal bonding, chemical bonding or mechanical reinforcement methods to make non-woven fiber network becomes . 6 , meltblown nonwoven : its process : the polymer melt extrusion --- feeding --- forming --- fiber fiber network --- Cooling --- a reinforcement into cloth .
7 , non-woven needle : It is a dry non-woven , non-woven fabric is the use of acupuncture needles puncture the role of the fluffy fiber mesh reinforcement into cloth . Eight , stitchbonded fabrics : a dry process nonwoven fabric , stitch method is the use of warp-knit structure of the web winding , the yarn layer , non-woven materials ( e.g., a plastic sheet , a thin metal foil, plastic , etc.) or reinforcement combination thereof , to form a  PINEZONE sanding roll nonwoven fabric . Non-woven uses its main purpose can be divided into :
( 1 ) medical , hygiene nonwovens : surgical gowns , protective clothing , disinfection pack cloth , masks, diapers, civilian cloths, wipes, wet towel , magic towel , towel roll , beauty products , sanitary napkins , sanitary protection disposable sanitary pads and cloth , etc. ( 2 ) non-woven home decor : wall covering , tablecloths , bed sheets , bedspreads , etc. ; ( 3 ) non-woven clothing : lining, interlining , flakes , stereotypes cotton , synthetic leather base cloth, etc. ( 4 ) industrial nonwovens ; filtration materials , insulation materials, cement packaging bags , geotextile, coated fabrics , etc. ; ( 5 ) agricultural nonwovens : crop protection cloth, seedling distribution , irrigation , insulation curtain , etc. ( 6 ) other non-woven : Space cotton , thermal insulation materials, linoleum , smoke filters, tea bags and other bags . The characteristics of non-woven fabric woven breaking the traditional textile principle , and has a short process, production speed, high output, low cost , versatile , sources of raw materials and more features .

Some of the major role of the abrasive wheel

In the grinding process, with the wheel itself is worn , the wheel is changing the face of the state . The longer the time , the  PINEZONE abrasive paper sheet lower the cutting ability of the wheel , a variety of grinding defects will continue to emerge , the grinding up to standard . Then it must be trimmed to achieve a normal grinding wheel condition. We usually refer to the grinding wheel life refers to the actual time between the grinding wheel dressing twice . Wheel length of life directly affects the grinding effects, especially more important for profile grinding . Determination wheel life
Is generally based on the wheel face  PINEZONE cut off wheel various phenomena arising from wear and tear , through observation and tests carried out . After grinding wheel wear phenomena arising are: self-excited vibration grinding process , the surface appears regeneration chatter ; increased grinding noise ; workpiece surface grinding burn occurs ; grinding force increases or decreases sharply ; grinding accuracy decreased ; grinding surface roughness increases.
These phenomena mentioned above are not PINEZONE Bonded abrasives  reasonable grinding independently generated , there is a correlation between them . There are two types of these phenomena are in need of special attention: first , due to thermal damage of the workpiece surface grinding temperature generated ; Second, because the roughness and precision decline caused by the self-excited vibrations .

abrasive wheel on the wrong lest carefully selected raw materials

Just saw a diplomatic storm news, poisonous dumplings triggered seven years of poison dumpling case affects the reputation of Chinese exports, but also a diplomatic storm, so that people raise questions on Chinese food, do not trust to a certain level. Subsequently, the strong focus on domestic government to eliminate these negative phenomena. After processing has been worlds apart, a lesson that we can not be repeated, as  PINEZONE abrasive sanding belt the Wheel "> resin wheel production enterprises, the use of raw materials is doubly concerned.
 Phenolic resin (phenolic resin) referred to PE. Phenolic resin is yellow, transparent, amorphous bulk material, due to the presence of free molecules reddish, the proportion of 1.25 to 1.30, soluble in alcohol, insoluble in water, water, weak acid, weak base solution stable. From phenol and formaldehyde in the catalyst conditions, condensation, and the resin was washed with water and made. Due to use of different catalysts can be divided into two types of thermoset and thermoplastic. Phenolic resin has good acid  PINEZONE PSA sanding disc resistance, mechanical properties, heat resistance, widely used in anticorrosion, adhesives, flame-retardant materials, resin grinding wheel manufacturing and other industries. The thermosetting phenolic resin is also an important raw material for adhesives, a single brittle phenolic resin is mainly used for bonding plywood and sand casting. Other polymer-modified phenolic resin-based adhesive material, plays an important role in the structure of the gel. Which phenolic - nitrile phenolic - acetal, phenolic - epoxy, phenolic - epoxy - acetal, phenolic - nylon and other adhesive has good heat resistance, high bond strength characteristics. Phenolic - nitrile and phenolic - acetal adhesive also has tensile, impact resistance, heat aging performance, structural  PINEZONE abrasive cloth belt adhesives varieties. After phenol and formaldehyde synthesis of similar chemical structure as ethyl acetate, methyl merely replaced the ring, so that this structure relative to urea-formaldehyde, melamine is considerably more stable, which is difficult to decompose, not easily produce formaldehyde, so environmental protection higher. And ester (fat) class has a feature that is not soluble in water, so with phenolic resin has some moisture function, and a small amount of water vapor and will not cause a drop of glue floor!
For all sorts we are strictly similar unpleasant event does not occur, to avoid the consequences of rebirth.

Brief Description: The single particle diamond or diamond pen

Thread grinding wheel dressing method
Methods: Turning trimming France / hand repair, by template type, shrink imitation rituals, automatic trimming
Brief Description: The single particle diamond or diamond pen, follow the turning mode, the car repair a tooth required. Diamond should be sharp angle 70 ° -80 °. Diamond Pen Specifications non woven abrasive  Optional F100-4, F80-4, F60-4, F46-4, F36-4, etc.
Comparative advantages and disadvantages: ① dressing for a long time, low efficiency, diamond knife life is not long, you need anytime grinding. ② modification of accuracy depends on the mother plate and the moving components of the manufacturing and mounting accuracy and motion uniformity. In mass production is difficult to maintain the consistency of tooth. ③ lower production costs
 Scope: The most widely used for zirconia flap disc  single-line and multi-line wheel dressing for ball screws, ball nut, acme screw, a small batch
 Methods: metal roller extrusion trim
 Brief Description: Wheel Material CrWMn, hardness 65HRC, on the rollers to openseveral flutes. Rolling wheel to slow down when repair, wheel driven synchronously rotating rollers, roller by squeezing the wheel surface grit crushed or make it fall off.
 Comparative advantages and disadvantages: metal roller is easy to manufacture, low cost, requires a thread grinding wheel deceleration devices. After dressing the grinding of the workpiece surface  abrasive fibre disc
quick change disc roughness higher accuracy than diamond toothed wheel. Metal roller easy to wear, lower life.
 Scope: For single-piece, small-batch production, low-precision or high-precision screw thread trimming coarse modification. Requirements threaded grinding wheel spindle has sufficient rigidity.

Coated Abrasives substrate type and production deal

Belt as a substrate composed of three elements, one is abrasive and adhesive belt carrier, while many aspects of belt characteristic also reflected by the substrate, such as a flexible belt is transferred from the substrate from, sizes also depends on the size of the substrate, the joint is mainly in the form of the substrate is. Visible substrate belt will directly affect the processing characteristics and life. The process again from the watch belt, the transmitted power required substrate to withstand  abrasive sanding belt the mechanical forces in the processing of high temperature and neither stretching nor broken. This requires not only a substrate having a certain tensile strength, shear strength, burst strength, thermal stability, and have a certain toughness, dimensional accuracy of the operation to reduce belt fatigue damage, shock and vibration, and also Because the quality of the substrate will be reflected through the abrasive and the workpiece surface up. Different substrates, woven substrates of different manufacturing process will determine the manner and nature of the substrate and the Sanding Sheets  different applications, the research and development of the coated abrasive substrate is also an extremely important aspect. Application of a substrate types and
Common base with the following categories: paper, film, cloth, vulcanized fiber, polyester fiber and composite substrates and so on. Each substrate and in accordance with the required flexibility, strength and material removal can be divided into different intensity levels.
1 base paper substrate and film
Paper used as the substrate has a long history, low cost, and its smooth surface, low surface roughness  material, but poor strength and toughness, load capacity is better cloth material. Film is used as the base country also rare, existing applications and the development direction of high-precision grinding as one in a foreign country (such as the UK), but it is subject to the same paper and light load roughing pass power, to withstand high pressure restrictions commonly used in light-load manual polishing and wood processing.
With advances in manufacturing technology, it has been able to produce high-intensity heavy-duty paper, heavy paper production process by adding a polymer to further enhance its strength. A conventional paper substrate sheet is laminated to three or four or more layers together to obtain the desired strength, the strength of the paper only reload one or more further layers are obtained, and Thermal sensitivity is small. Paper substrate in terms of length or width are relatively easy to obtain, and therefore more and more popular paper substrate. The original trial of a ring of paper only for low-load belt grinding or polishing, but since the introduction of two coated abrasive sand production line can produce different specifications and uses existing paper-based belt for selection, and the intensity higher, but the lack of development of heavy-duty paper. However, heavy paper substrate is an important direction of development. To improve the strength of a paper substrate and a flexible wet grinding often added or coated with the rubber, resin, or other materials in the paper base.
2 cloth material made from cotton or synthetic fibers made to increase the strength of the matrix polymer impregnated. Cotton cloth divided into two categories: one is a better light load flexible fabric - fine twill (J), the other is a heavy-duty fabric - denim fabric (X). Clearly, denim strength, poor flexibility for modifications on the machine grinding, but also for the disc grinder or belt grinder roughing. When the surface of the complex and just keep its shape, use of non-woven substrate is more suitable, but lower removal rate. Cloth material also often divided abrasive paper sheet  into four models for selection: J type, X-, Y-, S-type. J-type fabric is lightly loaded, soft, coarse molding for polishing: powerful X-type cloth, durable, suitable for heavy duty grinding: Y-type fabric weight of 30% compared to X-type, the overloaded Bucky not only tensile strength, but also to pierce, cracked, wrinkled or split stack are more resistant. It turns out the wire, wide belt grinding plate is very suitable, S-type cotton cloth, used a combination of wide belt machine. Cloth material widest range of applications, adding polymers or fiber cotton cloth material of various coolants have better resistance. In high-speed belt grinding, after a reasonable choice of abrasive must match the base of high-intensity, then often considered cloth material. 3 vulcanized fiber base
This substrate is laminated by a vulcanized fibers. Vulcanized fiber is broken cotton as raw material and then chemically treated cotton fibers to make gelled together, which is characterized by hard, powerful, good toughness, but still retains its soft music performance and is not sensitive to the coolant. The several layers of paper overlap gelled together and ground smooth vulcanized fiber substrate produced and made available for the production of coated abrasive grinding can be used to roll grinder.

Diamond wheel clogging type description

1 ) embedded clogging mechanism and attachment type
    Embedded and dependent type jams are clogging debris mechanically filling in gaps in diamond grinding wheel produced . Fill power from two aspects, one is external , one internal, related to the physical, electrical , thermal , etc. factors.
    External factors : grinding a very important feature , the radial component force Fy is larger than the tangential grinding force component Fz, Fy / Fz ≥ 2 ~ 10, the workpiece material more rigid plastic smaller , Fy / Fz ratio greater , grinding debris such areas are under strong pressure, is mechanically squeezed into the gap between the wheel surface . From  abrasive fibre disc the microscopic analysis of debris along the front of the slide abrasive , abrasive in front of the local area with several layers of debris piled in the back of abrasive due to the role of high-speed rotating grinding wheel , forming a vortex flow area, whirlpool area significantly reduced air pressure in the negative pressure , so that part of the debris attached to the back of the abrasive grains to form abrasive flank dependent clogging material is attached to the majority of ash and particles.
    Electrostatic field : the relative speed of the grinding wheel and the workpiece is much greater than V V sand workers, ordinary grinder V s = 3 ~ 50m / s, the speed of high-speed grinder grinding maturity value is 50 ~ 80 / s, foreign trials at speeds up to 1.5m / s or  Sanding Sheets less 200m / s ~ 250m / s, the speed of the workpiece . When the grinding wheel and the work of the relative motion , arranged according to certain rules of the charge in the grinding area, due to the grinding wheel and the workpiece surface electron escape will cause. Meanwhile , the grinding gas high temperature region will result in the shock due to the discharge , so that the neutral gas is ionized into positive ions and electrons. Some small areas in the grinding zone formed by a small electric field consists of the grinding wheel and the workpiece , the electric field , neutral atoms , positive ions, electrons , impurities, dust , not only the neutral atoms are ionized in the process , there are ion and electron recombination process. In the electric field , the polar part of the debris will be presented according to the principles of opposites attract , and the wheel opposite to the polarity of the debris is adsorbed on the surface of the grinding wheel . Since the electric field strength is small, so the adsorption force is weak, the wheel surface debris is not solid , but by means of mechanical pressure between the larger wheel and the workpiece, the wheel has been adsorbed on the surface of the wear debris can be stably embedded Wheel the gap between the surfaces . ( 2 ) blockage of the adhesion mechanism type :
   Most of the grinding process of grinding the input power into heat, so that the grinding temperature up to 1200K or more points , in such a high temperature, rapid grinding of the first case of air  Bonded abrasives oxidation , a low melting point metal oxide is formed , and then these metals oxide grinding zone was heated to high temperatures melt state , covering the surface of the wheel , when this part of the surface of the grinding wheel on participation once again in the role of the grinding force , and some pushed open , and some strengthening, increasing the affinity and adhesion with the wheel , and the adhered surface of the workpiece is pressed ridge groove surface . Through multiple stochastic grinding , many abrasive debris adhering four weeks , the grinding force increases, the temperature rises , thereby forming a vicious cycle of increased congestion, or the abrasive grain broken off, which is melt adhesive .