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毕业设计说明书(论文)
350中轧线材轧机设计
(The Design of 350 Middle Rolling Wire Stock Mill)
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摘要
线材的用途很广,在国民经济中有着大量的应用。中轧线材轧机是将粗轧钢坯进一步轧制,为精轧线材轧机轧制各种规格的成品线材提供原料。
中轧线材轧机在线材生产中起着非常重要的作用,为精轧线材轧机的进一步轧制创造条件。
本设计按照给定的压下规程和轧制速度计算轧制力和轧制力矩,选择主电机容量。对主要零件进行了强度计算,并对该轧机的经济效益进行了评价。该轧机采用三辊轧制。轴承采用胶木瓦材料。结构采用闭式机架。传动轴采用了梅花连接轴,便于换辊,拆卸方便。
在设计中将压上机构改成调整楔块和调整丝杆,解决了压上装置的封闭问题;取消了H形架,由2根撑杆和一个中辊上瓦座代替,消除了H形架变形断裂事故,保证了轧制生产的稳定性。
该轧机适合被中小型线材厂采用,它可以满足品种繁多的产品需要,而且比线材连轧机组投资少,见效快,更灵活。
关键词:线材,中轧轧机,闭试机架
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Abstract
The use of wire stock is very wide in country economy. Middle rolling wire stock mill is make rough rolling billet steel more roll,providing with raw material for fine rolling to gain various standard finish product wire stock.
Middle rolling wire stock roll play a great role in production of wire stock,and create a favorable condition for futher roll of fine rolling wire stock mill.
This putes draught pressure and roll torque and chooses main electric engine volume in term of the given presse rules and roll velocity. it putes the strength of main parts and evaluates the economy benefit of roll. The roll adopts three roller to roll. Mechanical bearing adopts bakelite watt material. Structure adopts closing mode framework. Drive shaft adopts wobbler spindle to make replace more convenience .
In the course of design, put the press up device modify to adjust wedge block and adjust lead screw, solving the problem of closing of press up device; use two roots bar stay and one middle roll watt bed instead of H mode frame, avoiding the accident distortion and fracture of H mode frame resulted in, ensuring the safty of roll product.
This mill adapt to middle or miniature wire stock factory, it may meet various products ’need,and invest fewer, act rapidly, agility than wire stock tandem mill.
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