軋輥產(chǎn)生彈性壓扁時可能軋制的板厚。在一定軋機(jī)上軋制一定的產(chǎn)品時，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。TheuseoflowstrengthgrayironrollsintheMiddleAgeswhenrollingsoftnonferrousmetals。這一極限厚度稱為可軋厚度。

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.

按軋輥材質(zhì)分有鋼軋輥、鑄鐵軋輥、硬質(zhì)合金軋輥、陶瓷軋輥等；按制造方法分有鑄造軋輥、鍛造軋輥、堆焊軋輥、鑲套軋輥等；按所軋鋼材狀態(tài)分有熱軋輥、冷軋輥。各種分類可以相應(yīng)組合而使軋輥有更明確的含義，如熱軋帶鋼用離心鑄造高鉻鑄鐵工作輥。

According to the roller material, there are steel rolls, cast iron rolls, hard alloy rolls, ceramic rollers, etc. according to the manufacturing method, there are casting rolls, forging rolls, hardfacing rolls, inlaid rolls and so on. According to the rolled steel status, there are hot rollers and cold rollers. Various classificati can be combined to make the roll more explicit, such as the casting of high chromium cast iron working roll for hot rolled strip.

軋輥的無損檢測通常用超聲波探傷儀進(jìn)行。冷軋輥探傷標(biāo)準(zhǔn)中通常把輥身依受力情況分成表面區(qū)、中心區(qū)和中間區(qū)，然后依斷裂力學(xué)原理分別規(guī)定各區(qū)允許存在的缺陷的臨界尺寸。

Nondestructive testing of rolls is usually carried out by ultrasonic flaw detectors. In the testing standard of cold roll, the roll body is usually divided into the surface area, the center area and the middle area according to the force condition, and then the critical dimensi of the defects are allowed in each area according to the principle of fracture mechanics.