1, a lot of people like the Japanese clamp steel, this process out of the chisel, in common parlance should be a flat spatula, the advantages of good grinding, the disadvantages of the high price, low practicality. At present, there is basically no mass production, imitations are only imitation appearance, not imitation technology. The water is deep, the beginner is not recommended.
2, mechanism, divided into two categories.
One is the German DIN standard, the original single product quality is impeccable, recommended to buy, important features of the wooden handle and FSC certification mark, and the metal part of the German description, it is really German market goods, the following chart German standard for reference.
The second is the American, American families traveling home essential, the mainstream two brands Stanley and Irving, the two standards are the same, hardness are about 60hrc, but the technical details are slightly different.
Mechanism chisel advantages, cheap, stable quality, cost-effective, can be used as a chisel, can also be used as a shovel, two in one.
As for grinding chisels do not have to worry about, the mechanism is 25 ° edge, sandpaper easily out of 30 or so edge, durability is very high, cut ordinary Q235 bolts effortlessly.
Lastly, let’s talk about the material and process.
Material, commonly used in Europe and the United States 65 manganese steel, a treasure 45 steel, most of the heat treatment hardness limit pull less than 55, there are sellers to promote vanadium steel, more false propaganda, vanadium steel in the low carbon steel or, but the hardness of the low, and is not suitable for edged tools, to do the pliers aviation scissors or good.
Process, are forging molding, heat treatment is divided into tunnel or high-frequency, high-frequency quality, expensive, tunnel batch price is cheap.
Comprehensive down.
Beginners recommended American, commonly used specifications 6 +12 +18 +25mm
