Application of mold abrasive grinding wheel
Mold is the basis for industrial production technology and equipment. 60% - 80% of the parts are in the electronics, automotive, electrical, electronics, instrumentation, home appliances and communication products rely on the molding. The mold production level of its processing using abrasives product quality are inextricably linked. A bigger compact mobile phones, computers and other electronic products, bigger fine, which mold development played an important role.
Today we explore some of the latest dynamic mold polishing. We called mold tool grinding, because the industry has been accustomed to this name.
Grinding tools with other grinding differs in that: completely by manual grinding machine, so operatives from the technical level of crucial important role. Wherein the choice of wheel size, the wheel truing the degree determination, the control of the amount of manual feed, etc., are determined empirically.
Grinding tools are generally divided into three categories, roughing, finishing and clear corner.
The kibble is usually chosen 46 # grain grinding wheels, is to cut the workpiece grinding to the required size, to achieve the desired flatness and finish can be.
The fine grinding usually use 100 # or 120 # wheel, in addition to the fine grinding plane, sometimes you have to grind the trough. Shape retention property of the grinding wheel also has a higher requirements.
Clearance angle is about 320 # dedicated wheel dressing to a thin thickness, such as 0.02mm, and then cut out groove, and then be trimmed, the bottom diameter of the groove will need to be flushed to R0.03mm
For coarse grinding and fine grinding, grinding process has basically standardized. But there are new material require different models of the wheel to the effective grinding. For example, the standard mold material SKD11 SKD61, with the requirements of cost reduction, domestic materials gradually adopted. The most commonly used is Cr12MoV and W6Mo5Cr4V2Al will find conventional grinding wheel loss will increase when these domestic grinding material, cutting materials and hardness has changed, need to be adjusted accordingly abrasive type and hardness of the grinding wheel to play a good grinding effect. If you have needs in this area, you can contact to Norton wheel of professional and technical personnel to communicate, we will be tailored for different users the right products to improve grinding efficiency and prolong the service life of the grinding wheel. Because tools the matte wheels in addition to the common 38A white fused alumina series, there 32A single crystal corundum family and SG ceramic corundum family, depending on the material, we will select a different abrasive grinding wheel. Go with a grinding wheel grinding all material often fail to get good results.
Dry and wet
Generally the grinding process generated heat will burn the workpiece, so it is necessary to use a coolant to keep the heat away, this is the so-called wet milling. But the grinding tools is a very special applications, due to the relatively complex shape of the part, the machining accuracy is relatively high, most of the process is set by manual, there is no way to use a wet milling method. In theory, the high hardness of the mold steel, single crystal corundum andSG grinding wheel is the best option. Dry grinding applications require abrasive has a good self-sharpening to avoid excessive heat generation, white fused alumina is the best option, which is why the tool grinding decade as one day the white corundum set the standard abrasive.
Slotted clear corner
Electronic mold grooving Norton brand New Releases performance clear angle dedicated AA grindstone, the product has excellent shape retention and grinding stability, not only able to grind very fine grooved, but can be processed than good bottom right angle. This process difficulty lies in the repair 0.2mm thickness grinding wheel abnormal rupture force, which is mainly caused uneven wheel internal organization. Norton AA grinding wheel is the proceed from this point on research and development, made a very big breakthrough in the manufacturing process, so now the AA wheel has overcome this weakness can be very stable repair to 0.2mm thickness, and very clear corner performance satisfaction.
At the same time in order to save the trimmed time, we recommended in tinkering with multi-point diamond pen repair within 30 minutes from 6mm to 0.5mm thickness of single store and back with a diamond pen built to 0.2mm. The total dressing can be controlled within a half hour.
Grinding System
Grinding that is a systematic project, input four aspects including machine tool setting, workpiece material type, operating parameters and the grinding wheel selection, through the grinding process, the grinding results (workpiece surface quality, productivity and economic output cost). Grinding results failed to achieve the desired results, and verification from the input of the four factors, rather than the grinding wheel. Sometimes not because of a wheel problem, but because the workpiece material changes or heat treatment fluctuations lead to the emergence of grinding problems, just to check wheel angle often waste a lot of time.
Not the more expensive the grinding wheel for grinding wheel for better, the cheaper the wheel more difficult to use this argument, it should be more applicable to the grinding wheel is better, what is applicable, is based on the condition of your machine and processing materials design grindstone with the model, can be cut with ease, and to achieve the surface quality requirements.