2. Those who are unfamiliar with the grinder cannot use the grinder.
3. Before starting the grinder, carefully check whether there is any debris between the grinder and the protective cover, and then confirm that there is no problem, then start the grinder.
4. The grinder is not allowed to be used due to poor maintenance or swaying of the grinding wheel shaft and serious wear of the grinding wheel due to long-term use.
5. When changing the new grinding wheel, it must be carefully selected. It is not allowed to use the grinding wheel with crack or damage, or the grinding wheel with poor grinding wheel and grinding wheel hole.
6. After the grinder is started, it should be idle for two to three minutes, and it can be used when the grinder is running normally.
7. When grinding the workpiece, do not use excessive force and do not hit the grinding wheel.
8. On the same grinding wheel, it is forbidden to use both at the same time.
9. The grinding wheel is not allowed to touch the water. It should be kept dry frequently to prevent the balance from being lost after the wet water.
10. After the grinding wheel is thinned and ground, it should be replaced in time.
11. After the grinder is used up, the switch should be turned off immediately, and the grinder should not be idling.
Bakelite Injection Molding Machine
Bakelite, also known as bakelite, also known as phenolic molding, is a thermosetting plastic with high impact toughness, stable quality, corrosion resistance, heat resistance and low temperature. Generally speaking, the process of Dewei forging bakelite Injection Molding Machine brand is divided into the following processes. You can have a look together to better understand the knowledge of bakelite injection molding.
1. Bakelite mold heating
Unlike Plastic Mold, bakelite mold can be produced after being put on the machine. It takes a long time to heat up bakelite mold.
2. Temperature rise of bakelite injection molding material
The customized material of bakelite injection molding machine is generally powder. Under the friction formed by the barrel heating device and the screw, the thermosetting plastic in the barrel is melted by heat to achieve the effect of pre-setting plastic material.
3. Injection molding of bakelite products
After the completion of pre-molding, the mold closes, the screw rod starts to inject, and the molten material is pushed by the screw from the barrel nozzle through the main channel, the diversion channel and the gate of the mold into the mold core, and the mold core is fully filled. Because the melted material is cut and heated during injection molding and the mold is at high temperature, the temperature of the melted material rises rapidly into a fast response situation. The injection time of bakelite products is different from that of plastic products, and the injection time of bakelite products is relatively long.
4. Dry and solid under pressure
After injection, it will enter the pressure maintaining state immediately. The effect of pressure maintaining has two aspects: one is shrinkage, and the other is to ensure that the product structure produced by the bakelite injection molding machine manufacturer can be close and firm. After the completion of pressure maintaining, it will be delayed for a period of time, waiting for the material to be completely dry and solid, and then the product will be finalized.
5. Ejection of bakelite products
Open the mold to eject the finished product, clean the mold, and wait for the next the first mock examination product to go out.
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Ningbo Chenwei Machinery Technology Co.,Ltd , https://www.chenweimachine.com