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Today, Vibratory Finishing Machine suppliers share the causes of scratches on polished workpieces in grinders:

The first type of scratch conforms to the relative movement trajectory between the workpiece and the abrasive tool, and the number of scratches is relatively shallow, which is caused by unreasonable selection of process parameters or uneven distribution of abrasive grains on the abrasive tool. The height of the abrasive grain is not caused by the same, the specific analysis is as follows:

1. The abrasive grain size of the previous process is too large. Grinding processing generally uses two processes of roughing and finishing to complete the processing requirements of the workpiece. The purpose of roughing is to shorten the processing time as much as possible, improve the processing efficiency and reduce the processing cost. Therefore, the general roughing will use the abrasive with larger grain size to process. If the selection is not suitable, the particle size is too large, which will directly lead to the workpiece being The machined surface produces deep scratches that are not well repaired during subsequent finishing, affecting the accuracy of the surface quality.

2. Abrasive particles protrude from the surface of the abrasive. In the actual grinding process, the distribution of abrasive grains on the abrasive tool is not uniform, and the size of the abrasive grains is different, and the height of the distribution is not uniform, which leads to some obvious scratches during the grinding process. Such scratches and grinding motion tracks Consistent and more frequent occurrences during the grinding process. Combined with the microscopic map of the surface of the workpiece in the previous test, it is not difficult to analyze that the protruding abrasive particles are the main reason for the formation of deep scratches on the surface of the workpiece.

The second type is a special scratch, the number of scratches is small, and the depth is more obvious. The cause has certain contingency and randomness, and has little relationship with the selection of process parameters. The reasons for the analysis may be:

1. Impurities in the coolant. In order to ensure the surface quality and reduce the temperature of the processing area, the fixed abrasive grinding process needs to be cooled. In this paper, water cooling is used. Since the coolant is not filtered before the test, it will certainly contain some hard particles with a relatively large diameter. The surface creates a deep random scratch.

2. Grinding generated grinding debris. The grinding debris generated by the workpiece during grinding is not easily broken, and the coolant cannot wash away the grinding debris from the surface of the workpiece in time, so that the abrasive chips are embedded in the bonding agent between the abrasive grains, and as the grinding continues They will accumulate and accumulate. The particles with the larger stroke will participate in the grinding process, and the deep groove will be drawn on the surface of the workpiece. When it falls off, the surface of the tool will be drawn deeper. Random scratches that affect the quality of the ground surface.

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How to ensure the polishing effect of the automatic polishing machine to create a polishing product that satisfies the customer? The following supplier of Aluminum Wheel Polishing Machine introduces: ...

The key to the operation of the polisher is to try to get the maximum polishing rate in order to remove the damage layer from the polishing as quickly as possible. At the same time, the polishing dama...

Today, Ceramic Grinding Abrasive manufacturers share the following five reasons for the loss of abrasives from bone glue:

1. When the bone glue is rolled on the abrasive, the force is not enough. When the pressure is not enough, the contact area between the abrasive and the bone glue is small, and the abrasive only sticks to the surface of the bone glue. Only the bottom of the abrasive is in contact with the bone glue, and the periphery of the abrasive is not connected with the bone glue. After the abrasive is stressed during the polishing process, it will be “rooted up”.

2. The abrasive is not fully cured after rolling. When the buffing is not fully cured during the buffing, the abrasive is equivalent to standing on the soil, and once the force is applied, the abrasive naturally falls off.

3. The polishing wheel is not preheated before the bone glue is applied, or the preheating is not enough. When the bone glue is applied to the grinding wheel blank, since the polishing wheel is not preheated or the preheating is insufficient, the bone glue is quickly cooled after being applied, thereby affecting the bonding strength of the abrasive.

4. The baking temperature after the bonding of the abrasive is too high. When the temperature of the baked bone glue is too high, the bone fragility is increased. At this time, the abrasive will be detached from the bone glue by a little external force.

5. The consistency of the bone glue was not formulated according to the abrasive grain size requirements. The main reason is that the preparation is too thin. At this time, the abrasive is only a shallow layer sticking to the top of the glue, and the contact surface with the bone glue is positively small, which will inevitably affect the bonding strength of the abrasive.



information about ceramic grinding abrasive : https://www.zhongyun-machine.com/product/abrasive/

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Today, the manufacturer of Aluminum Wheel Polishing Machine shares knowledge of automotive polishing:

Car polishing is the process of car cosmetic process. When waxing, sealing or coating, first polish the car. Because the glaze coating must be polished first and it is a finely polished car, the mirror can be made.

This is the operation that the glaze must pass. It has not been polished, the paint is not flat, and the sealing glaze has a very short holding time. It does not have the effect of long-term adhesion, and it is no different from waxing. Of course, depending on the condition of the paint, polishing does not have to be done in three steps, and the new car is often replaced in one step. However, the car that has done the crude wax must be polished in the wax. The car that has done the wax must be reduced by fine wax.

At present, the market demand for automobiles is very large, but the supply is slightly insufficient. In particular, there are not many enterprises with core intellectual property rights and excellent product quality. The industry as a whole lacks brand effect. In the period of strong demand, the industry has huge demand and good development prospects. This is beyond doubt.

However, how to maintain the health, stability and sustainable development of the industry requires the joint efforts of the enterprises in the industry. In particular, it is necessary to play the role of research and development, further improve the production process, reduce costs, truly solve the practical difficulties of customers, strictly control the quality, provide the most Reliable product.


information about aluminum wheel polishing machine : https://www.zhongyun-machine.com/product/wheel-pol...

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The abrasive material is a general term for materials used for polishing such as coated polishing abrasives, wire-type polishing abrasives, polishing abrasives, polishing liquids, brighteners, cleanin...

Today, Corundum Abrasive manufacturers share six polishing methods for abrasives as follows:

1. Mechanical polishing: Mechanical polishing is a polishing method that removes the polished convex portion by plastic deformation of the surface of the cutting material to obtain a smooth surface. Generally, oil stone strips, wool wheels, sandpaper, abrasive belts, nylon wheels, etc. are used, which are manually operated. Main, special parts such as the surface of the rotor, auxiliary tools such as turntables can be used, and the method of super-fine grinding can be used for high surface quality requirements. Ultra-fine grinding and polishing is a special grinding tool made of abrasive. In the polishing liquid containing abrasive, it is pressed against the machined surface to perform high-speed rotary motion. It is the highest of all polishing methods. This method is often used in optical lens molds.

2, chemical polishing: chemical polishing is to make the material in the chemical medium surface microscopic convex part of the concave part preferentially dissolved, so as to obtain a smooth surface. The main advantage of this method is that it can polish a workpiece with complex shapes without complicated equipment, and can polish many workpieces at the same time with high efficiency. The core issue of chemical polishing is the formulation of the polishing fluid.

3. Electrolytic polishing: The basic principle of electropolishing is the same as chemical polishing, that is, the surface of the material is selectively fused to make the surface smooth. Compared with chemical polishing, the effect of the cathode reaction can be eliminated, and the effect is good. The electrochemical polishing process is divided into macro leveling and micro leveling.

4. Ultrasonic polishing: The workpiece is placed in the abrasive suspension and placed in the ultrasonic field together, and the abrasive is ground and polished on the surface of the workpiece by the vibration of the ultrasonic wave. Ultrasonic machining has a small macroscopic force and does not cause deformation of the workpiece, but it is difficult to manufacture and install the tooling. Ultrasonic processing can be combined with chemical or electrochemical methods. On the basis of solution corrosion and electrolysis, the ultrasonic vibration stirring solution is applied to dissociate the dissolved products on the surface of the workpiece, and the corrosion or electrolyte near the surface is uniform; the cavitation of the ultrasonic wave in the liquid can also inhibit the corrosion process, which is favorable for surface illuminating.

5, fluid polishing: fluid polishing is based on high-speed flow of liquid and its abrasive particles to wash the surface of the workpiece to achieve the purpose of polishing. Common methods include: abrasive silicon carbide injection processing, liquid jet processing, hydrodynamic grinding, and the like. The hydrodynamic grinding is hydraulically driven to cause the liquid medium carrying the abrasive particles to flow back and forth across the surface of the workpiece at high speed. The medium is mainly made of a special compound which flows at a lower pressure and is doped with an abrasive. The abrasive can be a silicon carbide powder of an abrasive material.

6. Magnetic Abrasive Polishing: Magnetic Abrasive Polishing is the use of magnetic abrasive to form an abrasive brush under the action of a magnetic field to grind the workpiece. This method has high processing efficiency, good quality, easy control of processing conditions and good working conditions. With a suitable abrasive, the surface roughness can reach Ra 0.1 μm.



information about corundum abrasive: https://www.zhongyun-machine.com/product/abrasive/

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Today, Corundum Abrasive manufacturers share the benefits of abrasives:

Abrasives are widely used in industry, especially when machining high-precision or low-roughness parts or particularly hard parts. Abrasives and abrasives are essential. In addition, the grinding wheel is also an indispensable tool for the sharpening of the tool and the cutting of hard materials. In the automotive industry, the tight fit of the piston ring and the cylinder, the valve and the valve seat, the accuracy of the transmission and the gear, etc., must be processed with abrasives and abrasive tools to ensure. Other related new products, such as media for plastic bonded roller mills, save time and increase productivity for deburring large numbers of parts.

Abrasive production technology has made significant progress. The efficiency of diamond grinding wheels has increased four-fold compared to 14 years ago; the total cost of zirconia-alumina grinding wheels used in rolling mills is only 25% in 1948, and the speed is increased by 7 times. The current problem is that the basic theory of grinding is not yet clear and needs to be studied; the specifications of the products are complex, the variety is numerous, and it is not easy to simplify.



information about corundum abrasive: https://www.zhongyun-machine.com/product/abrasive/

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Abrasive is a particulate material with high hardness and a certain mechanical strength for the manufacture of abrasive tools or for direct grinding and polishing. It is widely used in the grinding of...

Today, what does the Corundum Abrasive manufacturer have to solve the abrasive polishing abrasives that are suitable for finishing the workpiece?

1. High-frequency porcelain abrasive has high structural density and is one of the most wear-resistant materials. When polishing, no matter how much polishing liquid is added, it is not effective for the cutting force of the workpiece, so it is often used for the workpiece. Fine polishing treatment.

2. Steel ball and flying butterfly steel ball are special abrasives for surface brightening. Steel abrasives are carbon steel and stainless steel. They are the best materials for surface brightening treatment. Carbon steel abrasives should pay attention to protection and surface rust prevention.

However, it does not work well when the workpiece is subjected to roughing such as deburring. It is added to the brightener to adapt to the surface brightening of powder metallurgy, die-casting parts, stainless steel, iron and other hard parts.

Because of the large ratio of steel abrasives, the impact force of the machine drive is relatively large when the grinding and polishing machine is working, so it is not suitable for the surface polishing of soft-material workpieces, such as copper workpieces and aluminum alloy workpieces.


information about corundum abrasive: https://www.zhongyun-machine.com/product/abrasive/

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Today, what do Corundum Abrasive manufacturers share about polishing abrasives?

The so-called polishing abrasive is simply an abrasive for polishing.

Polishing is a process in which the surface of a ceramic product is processed by high-speed rotation of various grinding heads of a polishing machine. The polishing process includes: smoothing, rough grinding, medium grinding, fine grinding, polishing, edging and chamfering.

Grinding tools and abrasives used: In addition to the use of diamond for the flat grinding, the various processes use silicon carbide powder of various fineness. When polishing, it needs to be flushed and cooled on the working surface to take away a lot of heat generated by the working surface to prevent the product from bursting. After polishing, it needs to be dried, and the surface is coated with wax or other paint to enhance its anti-staining ability and improve the gloss of the product.



information about corundum abrasive: https://www.zhongyun-machine.com/product/abrasive/

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