共查询到18条相似文献,搜索用时 109 毫秒
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介绍了采用CSP工艺技术轧制花纹板的优势及技术难点。根据产品特点,在开发中重新建立了卷取机张力控制模型,增设了卷取人机界面;并根据该生产线工艺特点,确定了合理的工艺参数,制定了花纹板工艺操作方案,提供了花纹辊槽尺寸公差和刻辊工艺改进方法。实践证明,在CSP线自主开发生产花纹板尺寸精确、表面光洁度高、花纹整齐均匀,可满足不同用户需求。 相似文献
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根据本钢1880热连轧厂短流程设备和工艺条件,对花纹板的生产工艺和数学模型进行了深入研究,提供了花纹辊槽尺寸公差和刻辊工艺改进方法,确定了合理的工艺轧制参数,制定了花纹板的工艺操作方案。实践证明,在本钢BSP线自主开发生产花纹板,解决了花纹板生产中存在的如纹高不足、板形不良等问题,形成了具有本钢特色的花纹板生产工艺制度,生产中取得了良好的效果。 相似文献
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本发明涉及一种热轧花纹板生产方法,通过提高加热温度、优化除鳞制度,从而提高精轧出口温度、改善钢材塑性、提高花纹成型性;加大花纹辊的花纹加工深度、增大花纹面积、改善花纹成型阻力,从而相应提高花纹板花纹高度、降低花纹辊机架压下率。本发明能够有效提高花纹板的产量和质量,具有显著的经济效益。 相似文献
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对两辊轧机生产3A21合金花纹板的工艺进行了研究.并对热轧坯料、压花前坯料、轧辊工艺润滑剂、花纹辊的维护提出了良好的建议。 相似文献
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通过对轧制薄规格(厚度≤2.3 mm)花纹板的研究,得到如下结论:优化温度制度、降低精轧末架负荷、调整末架上下辊的辊压、优化精轧工作辊辊型及层流冷却工艺是解决轧制不稳定、带钢出精轧末架轧机后易跑偏、严重边浪与中浪等问题的有效途径,解决了因花纹的纹高要求不能在平整机上平整,需经多次矫直、增加生产成本的问题。平整线拉矫比例从78%下降到5%以下,再未发生同卷钢需2次甚至3次的拉矫,板形质量达到同规格的平板水平。 相似文献
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在攀钢钒1450热轧板厂热轧花纹板产量逐年增加的情况下,提高产品的质量尤为重要。而在生产过程中出现的翘头、轧辊边部剥落、掉肉等情况,大大影响了热轧花纹板的质量。本文通过分析其形成原因及危害,针对该厂提出了改进建议和预防措施。 相似文献
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S Mu?oz Armas H Mu?oz Obando F Zambrano C Santana de Bleiberg N Gueron 《Canadian Metallurgical Quarterly》1977,28(1):98-106
A study was made of EP recorded in the visual projection area of the cerebral cortex in children with normal sight and in those with disturbed refraction when presented with blank and checkered patterns, the dimensions of the chess squares equalling 10, 20, 40, 60 and 120 angular minutes. In children with normal sight the patterns were defocussed by eyeglass lenses of --1 to +/- 6 dioptries. The investigation revealed a different EP configuration on the presentation of blank and checkered patterns. There was a similarity between the EP change when a blank pattern was replaced by a checkered one, and when the checkered pattern was made sharper. It is assumed that these EP changes results from enhanced lateral inhibition due to the contrast boundaries of the checkered pattern, The experiments carried out on children with disturbed refraction indicated that the maximal EP amplitude corresponded to the optimal optic correction, which shows that theuse of EP is a promising cue in determing vision acuity. 相似文献
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The checkered plate,also known as the floor/pattern plate,has a raised pattern that provides excellent skid resistance for a wide range of applications. As one of most commonly used products,the carbon steel checkered plate requires a high-cost coating for corrosion resistance. Although the austenitic stainless steel checkered plate meets corrosion resistance requirements,it does not necessarily provide high overall performance due to its low yield strength,which means greater thickness and weight. Combining the advantages of stainless and carbon structural steel,Baosteel has developed a new roll-bonded clad checkered plate that exhibits high performance in skid resistance,strength,and corrosion resistance. Metallographic analysis show s the cladding interfaces to be very good,with stainless steel filling the whole pattern and a uniform microstructure in the different cladding layers. The yield strength and tensile strength of the product are 470 MPa and 610 MPa,respectively. In addition,the fracture morphology exhibits excellent interfacial bonding properties. We performed external and internal bend tests at room temperature,180°,and 0.7a without the development of any cracks,which indicates its excellent formability. 相似文献
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本文根据目前热连轧花纹辊使用过程中花纹剥落、开裂、高度不均等失效形式,分析了其产生原因、形成机理,完善了缺陷预防的管理制度。 相似文献
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热轧花纹板的冷硬铸铁轧辊,是典型的难加工材料,表面密布半圆形槽腔。本文介绍了采用硬质合金成型铣刀进行切削加工的经验。 相似文献