Heat treatment processing technology of high-strength bolt
A technology of high-strength bolts and processing technology, applied in heat treatment furnaces, heat treatment equipment, hot-dip plating processes, etc., can solve problems such as troublesome operation, incomplete reaction, and low yield rate, so as to avoid uneven treatment effects and reduce labor costs. Cost, shortening the effect of the work cycle
Pending Publication Date: 2022-03-08
苏州昭伍亿精密五金有限公司
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Problems solved by technology
[0003] High-strength bolts are widely used in the fastening connections of various important equipment, and play a vital role in the safety and reliability of engineering components. If high-strength bolts fail, it will cause major economic losses even personal injury
[0004] The current bolts need to go through many different processes in the heat treatment process, and each process needs to use different devices to place the bolts. Not only is the operation more troublesome, it takes a long time, and each time it is replaced, it is easy to cause the bolts to fall off. In addition, due to the large number of bolts processed at one time, the stacking of bolts during the treatment process leads to incomplete reactions in the heat treatment process, resulting in the obtained There is a difference in product strength, and the yield rate is not high
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Embodiment 1
[0035]A heat treatment process for high-strength bolts, comprising
[0036] Step 1: Prepare for heat treatment, put the processed bolts into the hanger structure, and put them into the annealing furnace for spheroidization process;
[0037] Step 2: Phosphorus removal process, put the cooled hanger structure equipped with bolts into different solutions in turn, and perform degreasing, cleaning, and anti-rust agent operations;
[0038] Step 3: quenching and heating, put the hanger structure equipped with bolts into the quenching furnace for quenching work;
[0039] Step 4: Cleaning, put the hanger structure with bolts after quenching into a neutral detergent solution, and clean again to remove the quenching oil on the surface;
[0040] Step 5: tempering, put the cleaned hanger structure with bolts into the tempering furnace, and perform the tempering process.
[0041] Step 6: Surface treatment, immerse the hanger structure equipped with bolts into the molten zinc liquid, and p...
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A heat treatment machining process for a high-strength bolt comprises the steps that firstly, pre-heat treatment is conducted; 2, a phosphorus removal process; step 3, quenching heating; step 4, cleaning; and fifthly, tempering is conducted. Step 6, surface treatment; step 7, hydrogen embrittlement prevention treatment; and 8, detecting. All the structures cooperate with one another, and therefore the high-strength bolt part is obtained. In addition, the same hanger structure is used for processing different working procedures, operation is convenient, and loss such as bolt falling caused by frequent replacement in the prior art is avoided.
Description
technical field [0001] The invention relates to the field of fastener production, in particular to a heat treatment process for high-strength bolts. Background technique [0002] Heat treatment processing is one of the important processes in the production process of fasteners, which can effectively improve the comprehensive mechanical properties of fasteners to meet the specified tensile strength and yield ratio of products. [0003] High-strength bolts are widely used in the fastening connections of various important equipment, and play a vital role in the safety and reliability of engineering components. If high-strength bolts fail, it will cause major economic losses Even personal injury accidents. [0004] The current bolts need to go through many different processes in the heat treatment process, and each process needs to use different devices to place the bolts. Not only is the operation more troublesome, it takes a long time, and each time it is replaced, it is easy...
Claims
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IPC IPC(8): C21D9/00C21D1/32C21D1/18C23C2/06C23C2/28C21D3/06C23F17/00C23C2/00C23G3/00
CPCC21D9/0093C21D1/32C21D1/18C23C2/06C23C2/28C21D3/06C23F17/00C21D9/0025C23C2/003C23G3/00
Inventor 李国良
Owner 苏州昭伍亿精密五金有限公司