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耐磨板表面水波纹出现的原因有哪些?

所属分类:行业动态 发布时间:2021-04-16 来源:https://www.lcnaimoban.com/ 浏览量:

耐磨板的生产中,由于除鳞不彻底,轧制和矫直时,氧化铁皮被压入耐磨板,经抛丸除去后,耐磨板表面会呈现为片状规则或条状不规则缺陷,称之为"水波纹"。研究表明,氧化铁皮清除不净,高压水喷嘴搭接不好,轧鞮硬度偏低,预矫直机压力过大,是“水波纹"缺陷产生的主要原因。相关控制措施是
In the production of wear-resistant plate, due to incomplete descaling, during rolling and straightening, the oxide scale is pressed into the wear-resistant plate. After shot blasting, the surface of the wear-resistant plate will present sheet regular or strip irregular defects, which is called "water ripple". The results show that the main causes of "water ripple" defects are unclean scale removal, poor lap joint of high pressure water nozzle, low rolling hardness and excessive pre straightener pressure. The relevant control measures are
—、采用高硬度轧鞮
I. high hardness rolling machine is adopted
采用高铬铁轧琨,鲲面硬度约为里氏硬度75HL左右,比原来高镍铬轧铜硬度提高了10HL,轧辐使用后情况观察,下机后轧混表面光洁,覆盖一层致密的氧化膜,轧制耐磨板表面光洁,“水波纹"纹缺陷发生率大为降低。
The hardness of the surface is about 75hl, which is 10hl higher than that of the original high nickel chromium copper rolling. After using the rolling spoke, the surface of the rolling mixture is smooth and smooth, covered with a layer of dense oxide film. The surface of the rolled wear-resistant plate is smooth and the incidence of "water ripple" is greatly reduced.
二、控制预矫直压力
2、 Control of pre straightening pressure
NM400耐磨板
通过对不同压力矫直后耐磨板表面情况的跟踪得知,经过600吨预矫压力矫直的耐磨板表面"冰水波纹"缺陷发生几率大大增加,将预矫直机矫直压力控制在300吨以下,“水波纹"缺陷发生率有所降低,严重程度得到下降。
Through tracking the surface condition of wear-resistant plate after straightening by different pressure, it is known that the probability of "ice water ripple" defect on the surface of wear-resistant plate straightened by 600 tons of pre straightening pressure is greatly increased, and the straightening pressure of pre straightening machine is controlled below 300 tons, the occurrence rate of "water ripple" defect is reduced, and the severity is reduced.
三、降低耐磨钢坯加热温度
3、 Reducing heating temperature of wear resistant billet
降低加热温度的措施,将加热炉出炉钢温由过去的1190C降低至1160°℃,该措施在一定程度上减少了"水波纹"缺陷发生的几率,水波纹缺陷的严重程度有所下降。
The measures to reduce the heating temperature can reduce the steel temperature of the furnace from 1190c to 1160 ° C. to a certain extent, this measure can reduce the probability of "water ripple" defect and the severity of water ripple defect.
四、优化除磷工艺
4、 Optimization of phosphorus removal process
为弥补由于高压水喷嘴搭接不好造成的条带状"水波纹"的产生,利用机前除鳞系统对从机后轧制送至机前的耐磨板进行除鳞操作,一定程度上减少了条带状"水波纹"的发生。同时进行除鳞系统的改造,增加机后除鳞系统,以达到进一步消除条带状“水波纹"缺陷的发生。
In order to make up for the strip "water ripple" caused by poor lapping of high-pressure water nozzles, the descaling system in front of the machine was used to descale the wear-resistant plate rolled from the back of the machine to the front of the machine, which reduced the strip "water ripple" to a certain extent. At the same time, the descaling system was reformed and the descaling system was added to eliminate the strip "water ripple" defect.
今天就是小编要给大家讲解的内容了,本着对客户负责的原则,大家在选购中一定要注意产品的质量,NM400耐磨板真诚为您解决问题,欢迎您来电咨询.
Today is the content that Xiaobian will explain to you. In line with the principle of being responsible for customers, we must pay attention to the quality of products in the purchase. Nm400 wear-resistant plate sincerely solves the problem for you. Welcome to inquire
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