钢管输送状态(条件)

钢管输送状态(条件):冷 /硬(BK),冷 /软(BKW),冷应力缓解退火(BKS),退火(GBK),归一化(NBK)。

Hot-rolled condition

在热轧或锻钢和没有菲尔特er special heat treatment, cooling directly after delivery, the state is called hot rolling or forging, hot-rolled (wrought) termination temperature is generally 800 ~ 900 ℃, generally in air after natural cooling, and thus hot-rolled (forged) status equivalent to normalizing. The difference is because of hot-rolled (forging) the termination of high and low temperatures, unlike normalizing strict temperature control heating and thus volatility in steel microstructure and mechanical properties than are well done. Currently many steel companies controlled rolling, because the finishing temperature control is very strict, and after finishing forced cooling measures taken thus grain refinement of steel, steel delivery have higher mechanical properties. No twisting controlled cooling of hot-rolled wire rod superior than ordinary hot-rolled wire rod performance is the truth, hot-rolled (forging) state delivery of steel, the surface is covered with a layer of iron oxide, which has a certain degree of corrosion resistance, storage custody Unlike the strict requirements as cold drawn (rolled) state of delivery of steel, medium-sized steel, thick steel plate can be stored in the open air yard or through thatch cover.

冷画(滚动)条件

通过冷绘图,冷滚动的钢铁产品,例如冷形成,热处理,没有任何直接递送的状态,称为冷绘制或冷滚动状况。与热滚动(锻造)状态相比,高尺寸精确度冷钢(滚动)状态,良好的表面质量,低表面粗糙度,并且由于冷水(滚动)钢递送状态氧化物表面,因此具有更高的机械性能没有覆盖,并且有很大的压力,容易受到腐蚀或生锈的攻击,因此钢冷(滚动)状态,其包装,存储要求更加严格,通常需要保存在仓库中,应注意到温度和湿度控制装置。

Normalizing condition

前钢铁工厂通过使热处理标准化,这是上述标准化状态的交付状态。由于将加热温度归一化(hypoetectoid钢为AC3 +30〜50°C,Eutectoid钢是ACCM +30〜50°C)的温度控制,而不是严格的热卷终止,因此钢的组织,均匀的性能。与钢制退火状况相比,由于更快地归一化冷却,增加了珠光钢的数量,珠光层和钢的谷物细化,因此具有较高的机械性能,并将有助于改善宽大的低碳钢和钢质胶质胶石,并进一步改善成品良好的组织和准备的热处理。碳钢,合金钢经常被用于标准化输送状态的标准化。

Annealed condition

Former steel factory after annealing, this delivery condition is called annealed condition. Annealing main purpose is to eliminate defects and improve the organization and internal stress left before the procedure and after the procedure to prepare for the organization and performance, alloy structural steel, guaranteed hardenability structural steel, cold heading steel, bearing steel, annealed steel commonly used tool steel, turbine blade steel, heat-resistant stainless steel body cable delivery.

回火状况

前钢厂通过高温热处理,这种情况称为恢复交付状态。回火温度很高,有助于消除压力,改善延展性和韧性,碳结构钢,合金钢,可确保可用于高温降温条件的可耐硬度结构性钢。由于高强度的高速钢,高速工具钢和高强度钢,由于高强度和加强合金元件的作用,通常在淬火后(或回火),钢碳水化合物合适的聚合,粗碳化物,通常一次颗粒获得钢结战组织(具有相似目标退火的组织),因此,钢的交付状态具有良好的可加工性。

国家解决方案处理

前钢铁工厂解决方案治疗后,这s condition is called solution treatment delivery status. This state is mainly applied to austenitic stainless steel processing factory before. By solution processing, single phase austenite to improve the toughness of steel and plastic, to create conditions for further cold (cold-rolled or cold-drawn), but also make the organization prepare for further precipitation hardening.

Weled steel pipe规格,标准和标识

焊接钢管(用焊接制造的钢管)是由扁平板(称为Skelp)制成的管状产品,形成,弯曲并制备用于焊接。