冷硬铸铁

The hardness of HSS roll was over 66 HRC, the depth of hardened layer excesses 30 mm, the variation of hardness in the roll surface was smaller than 1.5 HRC, and the wear resistance of HSS roll was better than that of high chromium cast iron roll and high nickel chromium indefinite hilled cast iron roll, close to that of powder metallurgy hard alloy roll.

研制出的高速钢轧辊硬度超过66HRC，淬硬层深度超过30mm，辊面硬度差小于1.5HRC，耐磨性优于高铬铸铁和高镍铬无限冷硬铸铁轧辊，接近硬质合金轧辊。

With 80 tons of the following traffic manufacturing licenses, cast iron roll (the ball ink, Chilled, Chilled unlimited, high-chromium) production licenses, road transport operators permit, smelting works two general contracting business qualification, lifting equipment to install two qualification, electrical and mechanical equipment installation qualification and two anti-corrosion insulation works 2 qualification.

具有80吨以下行车制造许可证，铸铁轧辊（球墨、冷硬、无限冷硬、高铬）生产许可证，道路运输经营许可证，冶炼工程施工总承包二级企业资质，起重设备安装二级资质，机电设备安装二级资质和防腐保温工程二级资质。

Use of alloy chilled cast iron roller, a hard wear-resistant surface, cavity processing, so that the roll surface temperature uniformity.

辊筒采用合金冷硬铸铁，个面坚硬耐磨，内腔加工，使辊面温度均匀。

Use of alloy chilled cast iron roller, a hard wear-resistant surface, cavity plus ah, so that the roll surface temperature uniformity.

辊筒采用合金冷硬铸铁，个面坚硬耐磨，内腔加工，使辊面温度均匀。

And with advanced physical and chemical testing equipment, so that production of ordinary carbon steel materials castings, iron castings; alloy steel castings; non-ferrous metal castings; ordinary ductile cast iron parts, wear-resistant, high temperature for Ductile Iron Castings; various centrifugal unlimited cold Hard Cast Iron Roll, Chilled Ductile Iron unlimited roller; all kinds of wire rod, rebar, steel roller with groove, such as product quality is fully guaranteed.

并具有先进的理化检验设备，使生产的各种材质的普通碳钢铸件、铁铸件；合金钢铸件；有色金属铸件；普通球墨铸铁件，耐磨、耐高温球墨铸铁件；各种离心无限冷硬铸铁轧辊、无限冷硬球墨铸铁轧辊；各种线材、螺纹钢、型钢用孔型轧辊等产品质量得到充分保证。

Current main products of centrifugal cast iron roll, chilled cast iron rolls, unlimited Chilled ductile iron pipe and roll kind of tools rose by Roll, straightening roller, roller guide roll sizing Central products and even roller mill, high-speed wire Roll roll, such as hot-rolled, the company also produces DHT300, DHT350 tensile alloy die casting, mainly applies to stainless steel plate, the plate, drawing manufactures aluminium die tensile material.

公司目前主要产品有离心复合铸铁轧辊，冷硬铸铁轧辊，无限冷硬球墨铸铁轧辊以及制管工具类的涨减轧辊，矫直辊，定径辊导辊环类产品和连轧机辊，高速线材辊等热轧辊，本公司还生产DHT300、DHT350合金铸造拉伸模具，主要适用于不锈钢板，铁板，铝板拉伸制成品的拉伸模具材料。

Being made of cold hard alloy castiron,the roll wears well.

辊筒由冷硬合金铸铁制成，耐磨耐用，有双沟辊、单沟辊、双光棍之分。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。