Precautions when using diamond grinding wheels
Diamond grinding wheel is the hardest grinding wheel. It has the ability to be "indestructible" and its grinding ability is very strong. However, there are still some things to pay attention to when using diamond grinding wheels. In order to extend the service life of diamond grinding wheels.
1. Diamond grinding wheel is a kind of precious tool, which is only used for processing high hardness materials, not suitable for grinding general steel or other soft materials.
2. After the diamond wheel is installed on the flange, it must be statically balanced before it can be used. It should be noted that before the grinding wheel is used up, do not remove it from the flange.
3. The machine tool using diamond grinding wheel should have good rigidity, high precision of spindle selection (radial runout is not more than 0.01 mm), and it can make micro-feed.
4. The appropriate amount of grinding must be selected. The following data is available for reference:
(1) Grinding wheel linear speed:
Metal bond: ①10~15*/sec (dry grinding), ②20~35*/sec (wet grinding)
Resin bond: ①15~30*/sec (dry grinding), ②25~40*/sec (wet grinding)
(2) Workpiece linear speed: generally 10~15*/min.
(3) Grinding depth: The grinding depth should be small, otherwise the grinding wheel will wear quickly, and the grinding efficiency may not be high. Generally 0.005~0.01 mm/oxygen stroke is appropriate. The finer the abrasive particle size, the smaller the grinding depth, especially when no coolant is used.
(4) Longitudinal feed speed: generally 10~15m/min. 5. Coolant should be used as much as possible when grinding, which can not only improve the grinding efficiency and grinding quality, but also reduce the wear of the grinding wheel. Commonly used coolants include kerosene, light diesel oil, and light engine oil lamps. Kerosene is generally preferred. 6. When the new diamond grinding wheel is used, in order to obtain the correct shape (roundness of the outer circle, flatness of the end surface), it also needs to be trimmed. The trimming method can be a silicon carbide grinding wheel or a silicon carbide abrasive in the flat The metal plate or glass plate is trimmed by hand grinding (used to trim the end face of the grinding wheel).
Diamond Silent Calibrating Wheel
In order to save expensive diamond grinding wheels, the natural dressing method can also be adopted, that is, the new grinding wheel is first used for rough grinding, and after it is worn to a securities shape, it is used for fine grinding. If you find that the grinding wheel is not sharp enough or clogged during the grinding process, you can also hold the silicon carbide grinding wheel to carefully trim the working surface of the grinding wheel.
Also need to pay attention to the following issues:
1. Positive operational problems
In daily use, many operators are always accustomed to operating directly on the grinding wheel. The reason is that they can use strength in this direction. In fact, this behavior is a behavior that should be particularly prohibited in the operation of the grinder. According to the operating rules, when using the grinder to grind the workpiece, the operator should stand on the side of the grinding wheel and not operate on the front of the grinding wheel, so as to avoid the grinding wheel flying out or the grinding wheel breaking out and hurting people when the grinding wheel fails.
2. Side grinding problem
In the daily use of grinders, we can often find that some operators, regardless of the type of grinder or the type of grinding wheel, use the side of the grinding wheel to grind at will. This is a serious violation of the safety operation rules. behavior. According to the regulations, the grinding wheel with the circumferential surface as the working surface is not suitable for side grinding. The radial strength of this kind of grinding wheel is relatively large, and the axial strength is small. If the operator uses too much force, the grinding wheel will be broken and even hurt. This behavior should be prohibited during the use of.
Diamond Normal Calibrating Wheel
3. Joint operation issues
In actual daily operations, there are also such situations. Someone rushes production tasks and grabs working hours. Two people share a grinder to operate at the same time. This is a serious illegal operation and should be strictly prohibited. When a grinder is not enough, it can be solved by adding a grinder. It is absolutely not allowed to share a grinder at the same time.
4. Forced operation problems
When using the grinder, some operators, especially young operators, use too much force in order to achieve a fast grinding speed. This is an extremely unsafe operation. The flat body of any grinding wheel has a certain strength. Doing so is likely to cause the grinding wheel to break, or even fly out and injure people, which is also a prohibited behavior.
