Steel:refers to the carbon content of 0.02% to 2.11% between the iron and carbon alloys collectively, because of its low price, reliable performance, is the most widely used, the largest amount of metal materials. Non-standard mechanical design of the most widely used steel are: Q235, 45 # steel, 40Cr, stainless steel, mould steel, spring steel and so on.
Classification of low-carbon, medium-carbon and high-carbon steels:low < medium (0.25% to 0.6%) < high
Q235-A:low carbon steel with carbon content <0.2%, indicating that the yield strength is 235MPa, which has good plasticity, some strength but not impact resistance. Non-standard design is generally used for welded structural components.
45 # steel:carbon content of 0.42 ~ 0.50% of the medium carbon steel, its mechanical properties, cutting performance is excellent, poor welding performance.45 steel tempering (quenching + tempering) hardness between HRC20 ~ HRC30, quenching hardness generally require HRC45 hardness after high strength stability can not meet the requirements.
40Cr: session in the alloy structural steel. After tempering treatment has good mechanical properties, but weldability is not good, easy to crack can be used to make gears, connecting rods, shafts, etc., quenched surface hardness up to HRC55.
Stainless steel SUS304, SUS316:are low carbon steel with carbon content ≤ 0.08%.Has good corrosion resistance, mechanical properties, stamping and bending hot workability, standard SUS304 non-magnetic. However, many products due to smelting composition segregation or improper heat treatment and other reasons, resulting in magnetic, such as the need for non-magnetic need to be in the engineering drawings to explain.SUS316 than 304 corrosion resistance is strong, especially in the case of high temperature and harsh environments. At present, there are many 316L on the market, because of its lower carbon content, its welding performance, processing performance is better than SUS316. sheet metal in the non-standard design is generally used to do small parts of the outer cover, sensors, and other standard parts of the mounting seat, plate class can be used for parts connection.
Aluminium:AL6061, AL7075, 7075 aluminium plate belongs to super hard aluminium plate, the hardness is higher than 6061. But the price of 7075 is much higher than 6061. All of them can be treated with natural anodic oxidation, sandblasting oxidation, hard oxidation, nickel plating and so on. General processing parts with natural anodic oxidation, can ensure the finishing size. Sandblast oxidation has better appearance, but cannot guarantee high precision. If you want to make aluminium parts have the appearance of steel parts can be nickel-plated. Some aluminium parts which are in direct contact with products, such as adhesion, high and low temperature resistance, insulation requirements can be considered Teflon plating.
Brass:is composed of copper and zinc alloy, wear resistance has strong wear resistance. H65 brass is composed of 65% copper and 35% zinc, because it has good mechanics, technology, hot and cold processing performance, and the appearance of golden, non-standard industry applications more, used in the need for wear-resistant appearance of the high requirements of the occasion.
Purple copper: purple copper for copper monomers, its stiffness and hardness is weaker than brass, but better thermal conductivity. Used in the thermal conductivity and electrical conductivity requirements of high occasions. For example, laser welding part of the welding head part.
Post time: Oct-16-2024
