Which is the removal tool? A strong screwdriver is recommended

   Choose wellscrewdriver, disassemble without using 愁

     As a "handcuffs" person, all kinds of digital products have arrived at me, basically it is necessary to remove the dismantling.
     As a veteran "disassemble" person, a hand-finished screwdriver is of course kept in the EDC.
     In addition to being used for disassembling, the design and storage structure of these ingenious screwdrivers are often very delicate, and it is an excellent way to decompress the idle switch. (Feeling is better than fingertip gyro..). From this perspective, the ingenious screwdriver can be regarded as a man's "big toy".

In terms of materials, the precision screwdrivers generally use three alloys, 45#, CR-V and S2, which are described in detail as follows:
     CR-V is chrome vanadium steel, CR is chromium, V is vanadium, and chromium vanadium steel is an alloy tool steel. It is an alloy tool added to the element of chromium vanadium alloy. After heat treatment, the hardness is above HRC60.
     S2 is an impact-resistant alloy tool steel with carbon-silicon-manganese, phosphorus-sulfur-chromium, nickel-copper-aluminum and vanadium alloy elements. The quenching temperature is 880, the quenching medium is brine, tempered at 200 degrees, and the hardness after heat treatment is HRC58-62.
     45# steel is also carbon steel with carbon content of 0.42-0.50%. After quenching and quenching, good cutting performance can be obtained, and high mechanical strength such as strength and toughness can be obtained. Surface hardness after quenching Up to 45~-52HRC.
     Compared with the other two materials, S2 is more suitable as a batch material than the other two materials. The reason is that it is resistant to impact, strong in torsion, high in hardness and low in stress, and is very suitable as a tool steel.

Youfu Electronic Tools Co., Ltd.