幸运彩票

凯泉泵业杭州专卖:凯泉水泵批发,凯泉水泵经销商,凯泉水泵销售,凯泉离心泵!

行业资讯

当前位置:网站首页 > 行业资讯 > 行业资讯

  • 泵轴局部加热法能起到校直的作用吗?
  • 本站编辑:江氏名品水泵发布日期:2018-07-18 23:57 浏览次数:
KCZ·¨
泵轴局部加热法的校直方法
Straightening method of local heating of pump shaft
将弯曲的凸面朝上,在周围用石棉布包扎,然后用喷灯或气焊急热。加热温度约比材料临界温度低100℃左右。急热后,由于金属产生塑性变形,使其表面长度缩短,在冷却后虽有所拉伸,但已不能恢复原始状态了,从而造成与原始弯曲方向相反的反弯曲,使凸面平坦而达到直轴目的。如在凹面加温火助其热胀伸长,则效果更好。
Bend the convex surface upwards and wrap it around with asbestos cloth, then use a blower or gas to make it hot. The heating temperature is about 100 degrees below the critical temperature of the material. Due to the plastic deion of the metal, the surface length of the metal is shortened and the original state can not be restored after cooling, but it can not be restored to the original state, thus causing the reverse bending of the original bending direction, which makes the convex surface smooth and reach the straight axis. If the fire is heated on the concave surface, the effect will be better.
加热方法,应匀速、等距(距轴面20毫米左右),从中心向外旋出,然后由外向中心旋入,以保持温度均匀。
The heating method should be uniform and equidistant (about 20 mm from the axis), and spin out from the center, then rotate through the outer center to keep the temperature uniform.
加热面积与形状用轴向开口(轴向长而径向短)方法加热,使径向方位温度均匀,使轴不易产生扭曲。而用径向开口(径向长而轴向短)方法加热时,直轴效果显著。
Heating area and shape are heated by axial opening (axial length and radial short), so that the radial orientation temperature is uniform, so that the shaft is not easy to distort. The radial axis (radial long and axial short) heating method, the direct axis effect is remarkable.
校直时,先将轴平放在两支承上,使弯曲部分凸面向上,并在轴的最大弯曲处用湿石棉布包扎。
When straightening, the shaft is placed on the two support first, so that the convex part of the bending part is upwards and is wrapped with damp cotton cloth at the biggest bending part of the shaft.
此石棉布轴向开口0.15d×0.2d或径向开口0.35d×0.2d(d为轴的直径)的长方形口,然后在开口处用氧乙炔焰加热3-5分钟(采用强力焊炬,并且使氧气压力增至4-5大气压),温度达到500-600℃后,用干燥的石棉布覆盖受热处,保温10-15分钟,最后用压缩空气吹,使之迅速冷却。
This stone cotton fabric is axially open 0.15d x 0.2d or radial opening 0.35d x 0.2d (D as the diameter of the axis), and then heated by oxygen acetylene flame for 3-5 minutes at the opening (using a strong welding torch and increasing the oxygen pressure to 4-5 atmospheric pressure). After the temperature reaches 500-600, the heat is covered with dry asbestos cloth and 10-15 points are kept for heat preservation. The clock is finally compressed by air to cool it quickly.
轴的弯曲变化情况可由百分表测量。一次未能校直可以重复进行,校直后,轴应在加热处进行低温退火,即将轴转动并缓慢的加热至300-350℃,在此温度下保持一小时以上,然后用石棉布包扎加热处,使它缓慢地冷却到50-70℃,这样就可以消除内应力。
The bending of the shaft can be measured by a dial meter. Once the straightening can be repeated, after the straightening, the shaft should be annealed at low temperature at the heating place. The shaft will be rotated and slowly heated to 300-350 degrees C, and it is kept for more than an hour at this temperature, then the heating place is wrapped with asbestos cloth, so that it is cooled slowly to 50-70 degrees C, so that the internal stress can be eliminated.
轴在校直过程中的变化量与轴本身的材料性能有关。加热时,轴端的弯曲挠度逐渐增大到最大,这是由于凸部加热后金属膨胀所至。冷却后,轴端的弯曲挠度逐渐减小到最小,这是由于凸部迅速冷却金属纤维缩短的结果。
The variation of the shaft during straightening is related to the material properties of the shaft itself. When heating, the bending deflection of the shaft ends increases to the maximum, which is due to the expansion of the metal after the convex part is heated. After cooling, the bending deflection of the shaft ends is gradually reduced to a minimum, which is due to the shortening of the metal fibers rapidly in the convex part.
友情链接:V8彩票技巧  K8彩票注册  K8彩票走势  18彩票网  V8彩票计划软件  K8彩票  V8彩票官网  18彩票手机版  V8彩票下载  V8彩票投注  

免责声明: 本站资料及图片来源互联网文章,本网不承担任何由内容信息所引起的争议和法律责任。所有作品版权归原创作者所有,与本站立场无关,如用户分享不慎侵犯了您的权益,请联系我们告知,我们将做删除处理!