carbide network

While forging the high-carbon chromium bearing steel by the finish forge press, there still remains the issues that the carbide network can not be crushed with the low qualification rate.

精锻机锻造高碳铬轴承钢时存在网状碳化物不易破碎、锻件合格率低的问题。

To break down the eutectic carbide network of A-cast structure with grain size 4-5 grade, tensile strain of 60% is needed.

当铸志晶粒度力4～5级寸，破碎晶炭化物组织需要有60%以上的拉应变。

But it is brittle at room temperature because of its big grains and carbide network in the grain boundary coming from its slow cool-speed.

但是由于冷速较低，结果晶粒粗大，晶界形成了粗大的碳化物网络，使得它在室温下为脆性，其延伸率几乎为零，机加工性能极差。

The experimental results show that by combining rare earth modification with heat treatment the eutectic carbide network changes into carbide piece and precipitation of granular carbide are accelerated as a result deferring crack forming time and reduce crack propagation speed and increase the impact fatigue resistance effectively.

结果表明：稀土与热处理复合作用，可加速网状共晶碳化物向孤立块状的转变，促进粒状碳化物的析出，有效地推迟裂纹产生的时间，降低裂纹扩展速率，提高其冲击疲劳抗力。

The results showed that the higher internal stress and serious carbide network in the banded carbide in the inner roll body were the main causes of heavy back-up roll stationary cracking.

结果表明，辊身心部较高的内应力和在带状碳化物中存在严重的网状碳化物是造成大型支承辊置裂的主要原因。

There is no direct relation between the grade of carbide network and individual carbon content, neither is individual chrome content, because the conditions for strictly controlling contrast processing parameter is imperfect.

碳化物网状级别单独与碳含量或铬含量没有很直接的关系，原因是本试验不具备严格控制工艺参数的条件。

In order to detect the carbide network in high carbon hypereutectoid steel wire rods accurately, two kinds of detection method of the carbide network are compared.

为了准确地检验高碳过共析钢盘条中的网状渗碳体，分别对选用硝酸酒精溶液侵蚀和碱性苦味酸钠水溶液热侵蚀两种显示方法进行了比较。