不锈钢计量泵泵头的不锈钢材质类别及其调节方式
varem不锈钢计量泵扬程常用的控制方法有：常规模拟/开关信号调节。
在实际的过程控制应用中，我们广泛使用0/4-20mA模拟电流信号作为传感器、控制器和执行器之间信号交换的标准。具有外控功能的不锈钢计量泵也主要采用这种方式实现冲程频率和冲程频率的外调。
位置伺服机构是调节行程长度的常用方法。一体化伺服机构直接接收来自调节器或计算机的0/4-20mA控制信号，在0-100%范围内自动调节行程长度。
相对而言，调节行程频率的方法有很多种，包括变频电机控制和直接继电器触点控制。变频器由0/4-20mA电流信号控制，驱动不锈钢计量泵电机按要求的转速运行，实现冲程频率的调节。用于电磁驱动和部分电机驱动
外部触点信号也可用于调整动态计量泵的冲程频率。
美国不锈钢标准牌号304及其衍生牌号与日本、中国、国际、欧洲标准中相应牌号对照ASTM A959-04 ：：： GB/T20878-2007 EN10088-1：2005 UNS代号 牌号 新牌号 旧牌号 牌号 数字代号 S30400 304 SUS304 06Cr19Ni10
0Cr18Ni9 X5CrNi18-9 X5CrNi18-10 1.4301 S30403 304L SUS304L 022Cr19Ni10 00Cr19Ni10 X2CrNi18-9X2CrNi19-11 X2CrNi18-9X2CrNi19-11 1.43071.4306 S30409 304H …… 07Cr19Ni10 …… X7CrNi18-9 …… ……
S30415 …… …… 05Cr19Ni10Si2CeN …… …… …… …… S30430 …… SUSXM7 06Cr18Ni19Cu3 0Cr18Ni9Cu3 X3CrNiCu18-9-4 X3CrNiCu18-9-4 1.4567 S30432 …… …… …… …… …… …… …… S30451 304N SUS304N1
06Cr19Ni10N 0Cr19Ni9N X5CrNiN18-8 X5CrNiN19-9 1.4315 S30452 XM-21 SUS304N2 06Cr19Ni9NbN 0Cr19Ni10NbN …… …… …… S30453 304LN SUS304LN 022Cr19Ni10N 00Cr18Ni10N X2CrNiN18-9 X2CrNiN18-10 1.4311
S30454 304LHN.
各牌号P≤0.045%，S≤0.030%。为改善某种性能，WaterSunny不锈钢计量泵泵头的硫含量可控制特定范围，如切削用钢控制为0.015%～0.030%，可焊性钢控制为0.008%～0.020%，抛光用钢控制为≤0.015%。

Stainless steel material category and adjustment mode of stainless steel metering pump head
The common control methods of varem stainless steel metering pump head are: conventional analog / switch signal adjustment.
In practical process control applications, we widely use 0 / 4-20mA analog current signal as the standard for signal exchange among sensors, controllers and actuators. The water slide ring metering pump with external control function also mainly uses this way to realize the external adjustment of stroke frequency and stroke frequency.
Position servo mechanism is a common method to adjust stroke length. The integrated servo mechanism directly receives the 0 / 4-20mA control signal from the regulator or computer, and automatically adjusts the stroke length in the range of 0-100%.
Relatively speaking, there are many ways to adjust the stroke frequency, including variable frequency motor control and direct relay contact control. The frequency converter is controlled by 0 / 4-20mA current signal, which drives the metering pump motor to run at the required speed to realize the adjustment of stroke frequency. For electromagnetic drive and part of motor drive
The external contact signal can also be used to adjust the stroke frequency of the dynamic metering pump.
Comparison of American stainless steel standard grade 304 and its derivatives with corresponding grades in Japanese, Chinese, international and European Standards ASTM A959-04::: GB / t20878-2007 en10088-1:2005 UNS code grade new grade old grade digital code s30400 304 SUS304 06cr19ni10
0Cr18Ni9 X5CrNi18-9 X5CrNi18-10 1.4301 S30403 304L SUS304L 022Cr19Ni10 00Cr19Ni10 X2CrNi18-9X2CrNi19-11 X2CrNi18-9X2CrNi19-11 1.43071.4306 S30409 304H ……  07Cr19Ni10 ……  X7CrNi18-9 …… ……
S30415 …… ……  05Cr19Ni10Si2CeN …… …… …… ……  S30430 ……  SUSXM7 06Cr18Ni19Cu3 0Cr18Ni9Cu3 X3CrNiCu18-9-4 X3CrNiCu18-9-4 1.4567 S30432 …… …… …… …… …… …… ……  S30451 304N SUS304N1
06Cr19Ni10N 0Cr19Ni9N X5CrNiN18-8 X5CrNiN19-9 1.4315 S30452 XM-21 SUS304N2 06Cr19Ni9NbN 0Cr19Ni10NbN …… …… ……  S30453 304LN SUS304LN 022Cr19Ni10N 00Cr18Ni10N X2CrNiN18-9 X2CrNiN18-10 1.4311
S30454 304LHN.
P ≤ 0.045%, s ≤ 0.030%. In order to improve some properties, the sulfur content of watersunny stainless steel metering pump head can be controlled in a specific range, such as cutting steel 0.015% ～ 0.030%, weldable steel 0.008% ～ 0.020%, polishing steel ≤ 0.015%.