65mn spring steel strip is mainly used in production and manufacturing fields, so ordinary people may not know it. It can be used to manufacture precision machine tool screws, cutters, collars on spiral roller bearings and other precision tool products. In order to ensure quality, the manufacturing process also needs to follow certain standards. This standard is generally GB/T? 1222-2007. Only by strict implementation can we obtain a final product with high wear resistance, otherwise it will only lead to the consequences of insufficient hardness.
1. Price of 65mn spring steel strip
1. Shicheng? Spring support and hanger
Hebei Shicheng Pipe Industry Co., Ltd.
The current quotation is 20 yuan/piece
2. 65mn spring steel strip
Yongqing County Yangmazhuang Fuli Hardware Spring Processing Factory
The current quotation is 12 yuan/piece
3. Renqiu City? Yongxing Galvanized Steel Strip? 65mn Spring Steel Strip
Renqiu City Yongxing Strip Steel Processing Factory
The current quotation is RMB 2400?/ton
(The above information comes from the Internet and is for reference only)
II. Specifications of 65mn spring steel strip
Circle circle: Φ5.5~ 16mm Rolled material: Φ16~160mm Forged material: Φ160~450mm
Hardness, elasticity and hardenability are higher than 65 steel. 65MN steel strip has overheat sensitivity and temper brittleness tendency, and water quenching has Tendency to form cracks. The machinability in the annealed state is acceptable, the cold deformation plasticity is low, and the weldability is poor. ?Leaf springs subject to medium loads, coil springs and spring washers and spring rings with a diameter of 7-20mm. High wear-resistant parts, such as grinder spindles, spring chucks, precision machine tool screws, cutters, collars on spiral roller bearings, railway rails, etc.
3. 65mn steel strip standards
Executive standard for 65mn spring steel strip: GB/T?1222-2007.
65Mn spring steel, manganese improves hardenability, φ12mm steel can be quenched in oil, surface decarburization tendency is smaller than silicon steel, the comprehensive mechanical properties after heat treatment are better than carbon steel, but it is overheating sensitive properties and temper brittleness. It is used for various small-sized flat and round springs, seat cushion springs and spring springs. It can also be used to make spring rings, valve springs, clutch springs, brake springs and cold-drawn steel wire cold-rolled coil springs
Four , What is the approximate Rockwell hardness of 65Mn raw material
1. Hot rolling hardness: 240~270HB;
2. Cold rolling soft hardness: 190~220HB;
< p>3. Cold rolled hardness: 300~340HB;4. Heat treatment hardness: 38~60HRC.
Characteristics and scope of application: After heat treatment and cold drawing and hardening, it has high strength and a certain degree of toughness and plasticity; under the same surface condition and complete hardening, the fatigue limit is equivalent to that of alloy springs. However, it has poor hardenability and is mainly used for smaller-sized springs, such as pressure-regulating and speed-regulating springs, force-measuring springs, round and square spiral springs on general machinery, or springs drawn into steel wires for small machinery.
The 65mn spring steel strips on the market are not very expensive, but different manufacturers offer different prices, ranging from more than ten yuan per piece to thousands of yuan per ton, and their prices are The quality will also vary. Qualified 65mn spring steel strips should be products with excellent hardness, good plasticity, and excellent wear resistance, rather than products with low cold deformation plasticity and poor weldability. Therefore, when manufacturing 65mn spring steel strips Need to follow standards and refer to text parameters to ensure quality