General pressure under the control of has been that headbox control method is most effective and the most stable control method at present,the article has introduced general pressure under the control of method and the realization in the software simplely.
总压力控制是目前网前箱控制方法中最有效和最稳定的控制方法,文章简单的介绍了总压力控制的方法和在软件中的实现。
The strongpoint and disadvantage of the derivation method of the calculation formula of the total pressure of still water on curved walls in hydraulics textbooks are particularized and suggested methods are proposed according to practical purpose in teaching.
列举了水力学教材中曲面壁上的静水总压力计算公式推导方法及优缺点,并根据教学中的实际效果,给出了建议采用的方法。
This paper mainly introduces all sorts of means to control total pressure in air cushioned headbox.
随着造纸机车速的提高 ,传统的敞开式流浆箱很难满足生产需要 ,当车速超过 30 0m/min以后通常采用气垫式流浆箱 ,本文对气垫式流浆箱总压的各种控制方法做了较系统的介绍和比较分析。
In order to study the processing mechanism of BCF, the distribution of total pressure and statical pressure inside and outside the texturing tube are discussed with the help of the pressure probe, and the result of the experiments is analyzed.
为了探求BCF变形加工机理,利用测压探针测试了导丝管内部及出口端外的总压和静压分布规律,实验结果表明导丝管内为气流分布不均匀、速度梯度大、不对称的紊流流场。
Results show that:isolator has little effect on total temperature of the inlet exit;when the length of isolator is shorter,the total pressure of the inlet exit is.
同时,有无隔离段以及隔离段长度对进气道出口参数的影响,文中进行了初步的分析,结果表明:有无隔离段以及隔离段长度对进气道出口总温没有太大的影响;隔离段较短时,进气道出口总压比无隔离段小,但当隔离段长度增大到一定值后,进气道出口总压比无隔离段大;隔离段较短时,进气道出口马赫数比无隔离段大,但当隔离段长度增大到一定值后,进气道出口马赫数比无隔离段小。
The method can reduce the total compression rate of the finished products and raise intensity and tenacity of it.
采用加大半成品的总压缩率的方法,可以提高半成品热处理后的强度,从而可以减小成品拉拔的总压缩率,这样,有利于保证成品的强度和韧性。
The proper cumulative compression ratio can insure the pipe property.
在立式狄舍尔穿轧机上， 选择不同的工艺参数进行试验， 得出用连铸圆坯生产高质量钢管时， 应严格控制工艺参数， 尤其是优化穿孔前期的速度变化参数可防止管前端内析， 适宜的总压缩比（Ｂ 级管≮５－２ ， 石油套管≮１０－２） 可保证钢管的性能， 压缩比不足时， 可通过后续热处理改善钢管性能。