轧辊的无损检测通常用超声波探伤仪进行。冷轧辊探伤标准中通常把辊身依受力情况分成表面区、中心区和中间区，crane谁家好，然后依断裂力学原理分别规定各区允许存在的缺陷的临界尺寸。

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 i* the surface area， the center area and the middle area according to the force condition，铁岭crane， and then the critical dimensi* of the defects are allowed in each area according to the principle of fracture mechanics.

(1)软辊；肖氏硬度约为30一40，用于开坯机、大型型钢轧机的租轧机等。

(2)半硬辊：肖氏硬度约为40一60，用于大型、中型、小型型钢轧机和钢板轮机的租轧机。

(3)硬面辊：肖氏硬度约为60一85，用于薄板、中板、中型型钢和小型型钢轧机的稿轧机及四辊轧机的支撑辊。

(4)特硬辊le氏硬度约为85—100，用于冷轧机。

(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， *all type steel mill and steel plate turbine.

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

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

冷轧板带轧辊的辊身呈微凸，crane生产厂家，当它受力弯曲时可保证良好扳形；型钢轧机轧辊的辊身上有轧槽，根据型钢轧制工艺要求，安排孔型。钢管轧制中采用斜轧原理轧制的轧辊有圆锥形、腰鼓形或盘形。

The roll body of the cold rolled strip roller is slightly convex. When it is bent by force， it can ensure good shape. There are grooves on the roller body of the section mill roll， and the pass is arranged according to the rolling requirements of secti*teel. The rollers of skew rolling rolling rolling principle of conical drum or disc.