Material for tapping the wrench: The tap wrench is made by integral forging of 45 medium carbon steel or 40Cr alloy steel. The manufacturing standard for tapping the wrench: GB/T4392-1995 (tapping the wrench and tapping the wrench). The characteristics of the tap wrench: the hammer wrench is forged from high-quality medium carbon steel or high-quality alloy steel. The surface of the various wrenches is treated with bright chrome: bright like a mirror;
Gray Nickel: It is a brand new surface treatment method with strong anti-rust ability and will increase the service life of the product.
Sub-chromium: matt; phosphating: black, but dark, immersing the substance in the phosphating solution, depositing on the surface to form a layer of water-insoluble crystalline phosphorus, which is a process of hydrochloric acid conversion.
Electrophoresis: black, with brightness, under the action of external DC, the charged particles move in the direction of the dispersed medium to the cathode or anode to promote the separation of substances;
Others include blackening, pearl nickel and titanium plating. The utility model provides a multi-purpose double-headed wrench. It is characterized in that one side of the wrench opening has a stepped shape. It can be used to screw four different hex heads of different sides. This double-headed wrench can save a double-headed wrench; it can reduce the number of wrenches when removing hexagonal threaded fasteners; Fastener National Standards The problem of two sets of wrenches for moving machinery and other machinery during transitional periods. German-style tap wrenches are manufactured in accordance with GB/T4392-1995 (tapping wrenches and tapping wrenches). The characteristics of the German-style tap wrench: The tap wrench is integrally forged from high-quality medium carbon steel or high-quality alloy steel. It has reasonable design, stable structure, high material density, strong anti-strike ability, no folding, constant, no bending. The product is characterized by high dimensional accuracy and durability. The torque control is within this 3% range, which can meet the requirements of the pre-tightening high-precision torque value. The tapping torque of the Torx wrench is the product of the force and the distance. When tightening the threaded fasteners such as the bolts and bolts, it is necessary to control the amount of torque applied to ensure that the threads are tightened and the thread is not damaged due to excessive torque.
The material of the explosion-proof tool is copper alloy. Due to the good thermal conductivity of copper and almost no carbon, the heat generated in a short time is absorbed and transmitted when the tool and the explosion-proof tool body are rubbed or impacted. Another reason is copper. It is relatively soft, has good concession in friction and impact, and is not easy to produce tiny metal particles, so we can hardly see the spark, so the explosion-proof tool is also called the non-sparking tool. Explosion-proof tools are collectively referred to as “safety tools†and “non-sparking toolsâ€, and are collectively referred to as “explosion-proof tools†in China. The explosion-proof tools produced, sold and circulated in China can be divided into two categories according to the material: 1. Aluminum-copper alloy (commonly known as aluminum bronze) explosion-proof tool. The specific material is high-purity electrolytic copper as the matrix to add appropriate amount of aluminum, nickel and manganese. Metals such as iron form a copper-based alloy. 2. Beryllium copper alloy (commonly known as beryllium bronze) explosion-proof tool, the specific material is based on high-purity electrolytic copper as a matrix to add appropriate amount of bismuth, nickel and other metals to form a copper-based alloy. The thermal conductivity and electrical conductivity of these two materials are very good. The hardness and wear resistance of aluminum bronze after heat treatment can reach HRC30o or more with beryllium bronze, but the magnetic properties of aluminum bronze are slightly higher than that of beryllium bronze, but they all belong to the micromagnetic range. Aluminum bronze and beryllium bronze can be applied. Strong magnetic field environment. Material for tapping the wrench: The tap wrench is made by integral forging of 45 medium carbon steel or 40Cr alloy steel.
The manufacturing standard for tapping the wrench: GB/T4392-1995 (tapping the wrench and tapping the wrench).
Characteristics of tapping wrench: The hammer wrench is forged from high-quality medium carbon steel or high-quality alloy steel. It has reasonable design, stable structure, high material density, strong anti-strike ability, no folding, continuous, no bending, product size. High precision, durability and so on.
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