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Jiangmen Jinhe Hardware Products Co., Ltd., founded in 2016, is located in Jiangmen, the beautiful capital of overseas Chinese in the west of the Pearl River Delta in Guangdong, with a total production and office area of about 4000 square meters. It is a company integrating production management, warehousing, and sales. , A modern enterprise integrating services.

Basic knowledge of Phillips screwdriver specification selection

Phillips screwdrivers generally have 7 specifications from small to largest ph000 ph00 ph0 ph1 ph2 ph3 ph4 The approximate relationship between the diameter of the screwdriver shaft and the specifications: 4mm~4.5mm rods generally do cross Ph1, which can cover ph000 ph00 ph0 ph1 This series is basically a precision series, disassembly and assembly of small electronic devices, glasses, watches, radios, tape recorders, etc.. Must! This is mainly a set, of which ph000 is very small, not a lot of use The 6mm rod is generally used for the Phillips Ph2 specification. This is the most commonly used specification in the medium-sized screwdriver, so you can buy one separately and use it for the fastening screws of the display, radio, TV and other housings, transformer fixing, etc. It is also a Ph2 head that makes furniture door screws. The 8mm rod is used for Ph3, and the 10mm rod is used for Ph4. Basically, it may be used in mechanical equipment. It is rarely used in electronic assembly, unless it is used as an electric box controller... So the combination scheme of Phillips screwdriver configuration is roughly: Precision screwdriver set below 4mm rod + a separate Ph2 screwdriver If you consider that the handle of the suit is too thin to focus on, you can also configure a Ph1 screwdriver separately. It is not a problem if it is not configured. Nothing is too particular about a word There are many types of star batches, and the general suits start from T6, but some modern mobile phones have the smallest use of T5, so generally suit + T5 can hit the world. About the material experience: From lowest to highest Medium carbon steel-high carbon steel-crv- S2- S2 plus titanium oxide coating-S2 plus diamond coating. For example, wera's most high-end Beatles can increase friction after using diamond coating without increasing the force or slipping screws.

2020-12-29

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Screw detection

Test items: Screw component analysis, screw torque test, screw hardness test, etc. Please contact Ms. Chen for details extend: The influence of various elements in the material on the properties of steel: 1. Carbon (C): To supplement the strength of steel parts, especially its heat treatment function, but with the addition of carbon content, plasticity and resistance decrease, and will affect the cold heading function and welding function of steel parts. 2. Manganese (Mn): To supplement the strength of steel parts and to supplement the hardenability to a certain extent. That is, the strength of hardening is added during quenching, and manganese can also improve the surface quality, but too much manganese will hinder the ductility and weldability, and will affect the manipulation of the coating during electroplating. 3. Nickel (Ni): To supplement the strength of steel parts, improve resistance at low temperatures, improve atmospheric corrosion resistance, and ensure a stable heat treatment effect and reduce the effect of crispness. 4. Chromium (Cr): can supplement hardenability, improve wear resistance, supplement corrosion resistance, and help maintain strength at high temperatures. 5. Molybdenum (Mo): It can assist in the control of hardenability, reduce the sensitivity of steel to temper brittleness, and have a great influence on the tensile strength under tonic high temperature. 6. Boron (B): can supplement the hardenability, and help to make the low carbon steel have the expected response to the heat treatment. 7. Alum (V): Refine austenite grains and improve resistance. 8. Silicon (Si): to ensure the strength of steel parts, and the proper content can improve the plasticity and resistance of steel parts.

2020-12-29

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Self-tapping flat-tail screws used in switch, socket, LED lighting industry

When first contacting the screw industry, the socket screw flat tail self-tapping and the LED lighting screw machine thread are always mixed together. Sometimes even seeing the socket self-tapping flat-tail screw, it will be judged as a machine thread screw for LED lighting, and it will also be judged as a self-tapping screw when you see the machine-tooth tip and tail switch screw and so on.

2020-12-29

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