軋輥產生彈性壓扁時可能軋制的板厚。在一定軋機上軋制一定的產品時，隨著板帶的逐漸變薄，壓下越來越困難。當板帶薄至某一限度后，不管如何旋緊壓下螺絲或加大液壓壓下的壓力，不管反復軋制多少道，由于軋輥產生彈性壓扁而不可能再使產品變薄。這一極限厚度稱為可軋厚度。與兩線軋制的小型型材軋機相比，這些軋機一般被設計成可以進行高達4線的同時軋制的切分軋制。

The smallest plate thickness may be rolled when the roll produces elastic squash. When a certain product is rolled on a certain rolling mill, with the gradual thinning of the strip, it is becoming more and more difficult to press down. When the strip is thin to a certain limit, no matter how to tighten down the screw or increase the pressure of hydraulic pressure, no matter how many rolls are repeatedly rolled, it is  for the product to become thin due to the elastic flattening of the roll. This limit thickness is called the minimum rolling thickness.

軋輥是軋機的重要部件，按照軋機類型可分為領帶軋機軋輥、型鋼輪機扎輥和鋼管軋機軋輥三大類。

板帶軋機軋輥的輥身呈圓柱形，熱乾板帶軋輥的輥身微凹，當受熱膨脹時，可保持較好的扳形。

Roll is an important part of the rolling mill. According to the type of rolling mill, it can be divided into three types: the tie mill roll, the type steel turbine ligation roll and the steel tube rolling mill roll.

The roll body of a strip rolling mill is cylindrical, and the roll body of the hot dry plate is slightly concave. When the heat is expanded, it can maintain a better shape.

硬質合金軋輥是在硬質合金刀具的基礎上發(fā)展而來的，硬質合金是采用堅硬的碳化鎢顆粒硬質相與鎳、鈷等黏結相金屬燒結而成。硬質合金的性能取決于碳化鎢顆粒尺寸的大小和黏結相金屬含量的多少，當黏結相金屬中含有一定量的鎳和鉻時，不僅會大大提高軋輥的抗熱疲勞性能。板帶軋機軋輥的輥身呈圓柱形，熱乾板帶軋輥的輥身微凹，當受熱膨脹時，可保持較好的扳形。

Cemented carbide rolls are developed on the basis of cemented carbide tools. Cemented carbide is made of hard tungsten carbide particles and hard phase sintered together with nickel and cobalt bonded phases. The properties of cemented carbide depend on the size of tungsten carbide particle and the content of bonding phase metal. When the amount of nickel and chromium in the bonding phase contains metal, it will not only greatly improve the thermal fatigue resistance of the roller.

焊接時堆焊成敗的關鍵環(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，除一定的預熱措施外，多采用低碳低合金過渡層進行預先堆焊過渡層。Therearemanyclassificationmethodslikerollerare:(1)accordingtothetypeofproductwithstriproller,steelroller,wireroller。  

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.