軋輥產(chǎn)生彈性壓扁時(shí)可能軋制的板厚。在一定軋機(jī)上軋制一定的產(chǎn)品時(shí)，隨著板帶的逐漸變薄，壓下越來越困難。當(dāng)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(fù)軋制多少道，由于軋輥產(chǎn)生彈性壓扁而不可能再使產(chǎn)品變薄。這一極限厚度稱為可軋厚度。較大直徑的水平軋輥確定型鋼的的形狀，而較小直徑的一對立輥用于軋制邊部。

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.

(1)軟輥；肖氏硬度約為30一40，用于開坯機(jī)、大型型鋼軋機(jī)的租軋機(jī)等。

(2)半硬輥：肖氏硬度約為40一60，用于大型、中型、小型型鋼軋機(jī)和鋼板輪機(jī)的租軋機(jī)。

(3)硬面輥：肖氏硬度約為60一85，用于薄板、中板、中型型鋼和小型型鋼軋機(jī)的稿軋機(jī)及四輥軋機(jī)的支撐輥。

(4)特硬輥le氏硬度約為85—100，用于冷軋機(jī)。

(1) soft roll; the hardness of Shaw is about 30 40. It is used for the renting rolling mill of the billet machine and the large steel mill.

(2) semi hard roll: the hardness of the Shaw is about 40 to 60. It is used for the renting rolling mill of large, medium, small type steel mill and steel plate turbine.

(3) hard roll: Shore hardness of about 60 to 85, for supporting roller mill release sheet, plate, medium and small steel mill and four roller mill.

(4) the hardness of the hard roll Le is about 85 - 100 for cold rolling mill.

實(shí)踐表明，帶雙鍍槽的軸頭在使用過程中，鑲槽壁容易崩裂，目前常用易加工的帶平臺的袖頭代替雙因槽的抽頭。

直徑超過400mm的冷軋軋輥，在鍛造后，多半在中心饅一個(gè)670一250mm的通7L。這樣，一力面可以使軋輥經(jīng)熱處理店的內(nèi)應(yīng)力分朽均勾；另一方面在軋輥表面淬火時(shí)，可對軋輥通水冷卻，提高淬火效果。

Practice shows that, with double bath head is in use, insert groove wall is easy to crack, at present common processing platform with the cuff instead of double slot for tap.

Cold roll diameter of more than 400mm, after forging, mostly in the 7L center. A 670 250mm. So, on one hand can make the roller stress heat treatment shop allocation hook are; on the other hand, the roll surface quenching, the water cooling roller, improve the quenching effect.