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直角引线单头电热管

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一、直角引线单头电热管概述
A, right angle lead single head heating tube overview
直角引线单头电热管特点:安装方便可靠。 用途:金属模具或机器部件 电压:12-440V 推荐规格:10︿16×100︿1000
Right angle lead single head heating tube features: convenient and reliable installation. Use: metal mold or machine parts voltage: 12-440V specification: 10 * 100 ^ 1000 ^ 16
二、直角引线单头电热管氧化镁粉的选用
Two, the lead single head heating tube right selection of magnesium oxide powder
氧化镁 粉位于电阻丝和管壁之间,用于电 阻丝与管壁之间的绝缘。同时,氧化镁 粉又具有良好的导热性能。但是,氧化镁 粉又具有很强的吸湿性,因此在 使用时要经过防潮处理(氧化镁粉改性或电热管封口处理)
Magnesium oxide powder is located between the resistance wire and tube wall, used for insulation between the resistance wire and tube wall. At the same time, magnesium oxide powder and has good thermal conductivity. However, magnesium oxide powder and has strong moisture absorption, so when in use after curing treatment (magnesium oxide powder modified or electric heating tube sealing treatment)
三、直角引线单头电热管的寿命
Life of single head electric heat pipe three, right angle lead
电热管的寿命 除了与电阻丝质量有关外,还与氧化镁粉的质量,电阻丝 直径的选择等因素有关。对于高温电热管,KAWAI能制造表面负荷在8W/CM2以下的电热管。在选择 电阻丝的直径时,需计算 电阻丝的表面负荷以达到寿命要求。
Electric heating tube life in addition to the resistance wire quality, quality and magnesium oxide powder, the resistance wire diameter selection factors. For high temperature electric heating tube, KAWAI can make surface load in electric 8W/CM2 below the tube. In the selection of the resistance wire diameter, surface load calculation of the resistance wire to meet the life requirements.
四、直角引线单头电热管的环境条件
Four, right angle lead environmental conditions single head electric heat pipe
a.海拔高度不超过1000m
A. altitude does not exceed 1000M
b.周围环境温度-20~50℃
B. ambient temperature -20~50 ℃
c.周围空 气相对湿度不大于90%(环境温度为25℃时)
C. ambient air relative humidity of not more than 90% (an ambient temperature of 25 ℃)
d.周围无导电尘埃、爆炸性 气体及能严重损坏金属和绝缘材料的腐蚀性气体
No conductive dust, D. around the explosive gas and serious damage to the metal and corrosive gas insulating material
e.没有明 显的冲击与振动
E. has no obvious impact and vibration
五、直角引线单头电热管开裂
Five, right angle lead single head heating tube cracking
(1)不锈钢 管焊缝质量特别差,抗拉强度太低;
(1) stainless steel pipe weld quality is poor, the tensile strength is too low;
(2)新管,烘干工序没做好,氧化镁 内水分急剧受热膨胀对管壁形成较大压力。
(2) the new tube, drying process is not good, the moisture in the magnesium oxide has thermal expansion on the pipe wall pressure.
(3)在高湿 度下长时间不使用,有较多 湿气入侵到管内。
(3) do not use at high humidity for long time, there is more moisture intrusion into the tube.

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