When the customer comes to order the High Density Cartridge Heaters, after the selection, we will ask what materials are used by the outer tube. Generally, there are several kinds of situations. The customer has used it and knows what the material is; the customer has used it but the material is not clear; The customer purchased the High Density Cartridge Heaters for the first time and it is not clear what materials are needed. At this time, we need to help customers choose the right materials according to the heating medium and working temperature requirements.
How to choose High Density Cartridge Heaters material? Then we need to find out what materials and common materials are used in the High Temperature Cartridge Heater, so as to compare with the heating medium, working environment and temperature requirements.
First, there are several kinds of High Temperature Cartridge Heater materials?
1. Metals: carbon steel (iron), stainless steel, titanium tube and imported stainless steel materials, such as Ingle 840, Ingle 800, German stainless steel 321 and so on.
2, non-metal: quartz glass, ceramic, PTFE sheathed tube, silicon carbide.
What you need to know is that the use of 24V Electric cartridge Immersion Heater is focused on corrosion resistance or high temperature heating. It is direct conduction heating, convection heating or radiant heating, and whether the working environment has vibration or external impact.
Second, how to choose the 24V Electric cartridge Immersion Heater material?
Based on long-term experience, our factory has summarized the choice of tube materials for 24V Electric cartridge Immersion Heater in the common case of heating solid, liquid and gaseous media.
1. Casting, mold and mechanical equipment perforated plug-in heating
(1) Low temperature, 304 stainless steel material surface temperature of about 450 ° C, can meet the needs of most mold heating.
(2) Medium temperature, such as the extrusion tube electric heating tube is made of stainless steel 321 material, and the surface temperature is below 700 degrees.
(3) High temperature, such as high temperature single-head electric heating tube for quenching, stainless steel 310S material, surface temperature can be 800 ~ 900 °C.
2, water heating
(1) Non-potable water (cleaning, heat exchange, etc.), stainless steel 304 material can fully meet the temperature and anti-rust requirements.
(2) Drinking water, it is recommended to use stainless steel 316 material, because some areas are weakly acidic, safe and sanitary; of course, stainless steel 304 tube material can also be used.
3, oil heating
The oil barrel heat pipe material uses carbon steel and stainless steel 304 tube, which are relatively cost-effective.
4, corrosive liquid heating
According to the specific analysis of the corrosion characteristics of the heating medium, it is made of stainless steel 304. Stainless steel 316, titanium tube or Teflon material.
5, air dry heating
(1) Air dry burning 24V Electric cartridge Immersion Heater surface temperature: ≤450 ° C, tube material: stainless steel 304, stainless steel 316 and titanium tube;
(2) Surface temperature of 24V Electric cartridge Immersion Heater: ≤700 °C, pipe material: stainless steel 321;
(3) Surface temperature of 24V Electric cartridge Immersion Heater: 800 ~ 900 ° C, pipe material: stainless steel 310s is also called stainless steel 2520.
The High Watt Density Cartridge Heaters is made of a metal or non-metal tube as a casing, and a high-resistance electrothermal alloy wire is used as a heating material, and a high-purity magnesium oxide having good insulation performance and high thermal conductivity is filled and compacted around the heating wire. The utility model has the advantages of large power, high thermal efficiency, good mechanical strength, simple installation, long service life, and increased hot air circulation, which makes the heat dissipation fast.