硬質(zhì)合金軋輥是在硬質(zhì)合金刀具的基礎(chǔ)上發(fā)展而來的，硬質(zhì)合金是采用堅硬的碳化鎢顆粒硬質(zhì)相與鎳、鈷等黏結(jié)相金屬燒結(jié)而成。由于軋制過程是連續(xù)的過程，因此操作人員需要不斷檢測軋輥狀況，使生產(chǎn)出來的產(chǎn)品滿足用戶對更嚴(yán)格的公差和表面質(zhì)量的要求。硬質(zhì)合金的性能取決于碳化鎢顆粒尺寸的大小和黏結(jié)相金屬含量的多少，當(dāng)黏結(jié)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。

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.

（1）堆焊前需先將軋輥輥身表面的疲勞層或缺陷，尤其是裂紋必須徹底清除；  

（2）在堆焊時，為了防止裂紋的產(chǎn)生，必須先加工軋輥輥身預(yù)熱，預(yù)熱溫度根據(jù)軋輥輥及堆焊材料而定。

(1) before welding, the fatigue layer or defect of the roller body surface must be first removed, especially the crack must be thoroughly removed.

(2) in the process of surfacing, in order to prevent cracks, the roller body must be pre heated, and the preheating temperature should be determined according to roll rolls and surfacing materials.

在粗軋機架后，中型型材軋機有兩組連續(xù)的機架。連續(xù)軋機，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.

被軋制的鋼種  

被軋制的鋼種是選擇軋輥的關(guān)鍵因素，其抗變形能力隨坯料化學(xué)成分不同而改變，主要表現(xiàn)在軋制的各階段變形的負(fù)荷大小和變化。必須根據(jù)確定的強度和硬度選擇軋輥。  

Rolled steel

The rolled steel is the key factor to select the roll. Its deformation resistance varies with the chemical  of the billet. It is mainly manifested in the load and change of deformation in each rolling stage. The roll must be selected according to the determined strength and hardness.