既避免機(jī)械加工，又無補(bǔ)焊熱應(yīng)力熱影響，修正厚度也不受捆綁，一起產(chǎn)品所具有的耐磨性及金屬材料不具備的退讓性，確保修正部位的接觸協(xié)作。

Not only to avoid mechanical processing, but also to weld hot stress and heat, the correction thickness is not bound, and the wear resistance of a product and the non - concession of metal materials are not available, so as to ensure a hundred percent contact and cooperation of the corrected parts.

焊接時堆焊成敗的關(guān)鍵環(huán)節(jié)，要獲得理想的堆焊層必須綜合考慮某些可變因素，如：焊接電壓、焊接速度、軋輥轉(zhuǎn)速、軋輥的保溫、焊接電流、焊接材料等，對一些含碳及合金元素高的輥芯，為防止脆性區(qū)的裂紋，除一定的預(yù)熱措施外，多采用低碳低合金過渡層進(jìn)行預(yù)先堆焊過渡層。(2)semihardroll:thehardnessoftheShawisabout40to60。  

In order to obtain an ideal surfacing layer, some variable factors must be cidered, such as welding voltage, welding speed, roll speed, roll insulation, welding current, welding material and so on. Some roll cores with high carbon and alloy elements, in order to prevent cracks in brittle zone, have to be cidered in order to obtain ideal surfacing layer. In addition, the low carbon low alloy transition layer is used to pre weld the transition layer.

在粗軋機(jī)架后，中型型材軋機(jī)有兩組連續(xù)的機(jī)架。連續(xù)軋機(jī)，根據(jù)孔型設(shè)計既可以水平布置，也可以立式布置。對于有平行緣的型鋼和槽鋼，還配有機(jī)架。

After the roughing mill, there are two sets of continuous rack in the medium section mill. The continuous rolling mill can be arranged horizontally or vertically according to the pass design. For steel and channel steel with parallel edges, universal frame is also available.