The ordinary 201 stainless steel of the PC9030 car is okay, but the 304 stainless steel car is bad

NC3010 NC3020 NC3030 NC500H Process general steel such as 45# steel, 40Cr, 20# steel, A3 steel and other steel parts with moderate carbon content. If there is intermittent cutting in the workpiece, use NC3030, NC3010 and NC3020 are not suitable for intermittent cutting of No. 45 steel, and the impact resistance is obviously not as good as NC3030

C represents the shape of the blade, N represents the back angle of the blade, M represents the tolerance of the blade, G represents the cross-sectional shape of the blade, 12 represents the side length of the blade, and 04 represents the blade

The thickness of the chip, 08 means the R angle of the insert, HM means the chip breaker of the insert, NC3020 means the material of the insert

1. Generally speaking, turning inserts are divided into positive-angle inserts and negative-angle inserts. Positive-angle inserts indicate that the insert has a relief angle and only one side can be used; negative-angle inserts indicate that the insert has no relief angle and can be used on both sides of the insert.

2. The tolerance of the inserts is basically grade M. Generally, the models of positive angle inserts use CCMT, DCMT, TCMT, etc., and the negative angle inserts use CNMG, DNMG, TNMG, etc.

3. The thickness of the blade is generally stipulated, and there is no need to force memory

4. There are many types of insert chipbreakers, and the expressions of each manufacturer are different. Generally, before choosing a chip breaker, you must first ask the customer whether to use finishing or rough machining, and then choose a suitable chip breaker. Among the many chip breakers of Korean KORLOY, "HF", "HM" and "HR" are generally selected for finishing, medium cutting and rough machining, "AK" is selected for aluminum processing, and "HS" and "HMP" are selected for stainless steel processing.

5. The choice of material is the most difficult to grasp and the least easy to learn. Basically, material selection should be carried out according to customer requirements and product requirements. As far as Korean KORLOY blades are concerned:

NC3010 NC3020 NC3030 NC500H Process general steel such as 45# steel, 40Cr, 20# steel, A3 steel and other steel parts with moderate carbon content.

NC3015, CC115, NC310, and NC330 have a wider range of machining steel parts, but compared with NC3010, it has higher hardness and better wear resistance, but it is easier to chip, so it is not suitable for machining tough materials such as 20# steel and A3 steel. , Generally suitable for processing quenched and tempered steel, alloy steel, etc.

NC9020 PC8010 NC3030 PC9030 machining stainless steel.

NC6010 NC305K NC315K and other processing cast iron.

CN100 CT10 CN20 CN200 is a metal-ceramic blade. This kind of blade has high hardness but is relatively brittle. It is generally used in finishing. If the customer requires processing of about HRC30 degrees and high surface finish, this kind of blade can be used.

If some customers require to process materials with HRC60 degrees or more, CBN (cubic boron nitride) blades are generally recommended, and PCD (jewel knife) blades are generally recommended for processing aluminum parts that require a relatively high finish.

6. When the blade and the tool holder are used together, it is forbidden to match the positive angle blade with the negative angle turning tool. But some places can be loose, and the 7 degree relief angle insert in the positive angle insert can be installed on the 5 degree relief angle tool holder.