What are the types of wear-resistant thermocouples that can be classified based on the material of the casing?

Wear resistant thermocouples have the advantages of high reliability, flexible use, easy maintenance, and stable performance. They are specially designed and manufactured for measurement environments with low, medium, and high temperature wear resistance. They use plasma spray painting technology, high chromium cast iron, and high-temperature alloy materials to make wear-resistant protective tubes, which can be used in circulating fluidized beds, boiling furnaces, and cement rotary kiln exhaust chambers.
Wear resistant thermocouples can be divided into the following three categories based on the material of the wear-resistant sleeve, and each category has its own unique characteristics:
1. Wear resistant high-temperature alloy: a specially designed pure alloying alloy made by vacuum smelting based on the characteristics of high-temperature wear environment. It is a specialized wear-resistant high-temperature alloy with high temperature oxidation resistance and high temperature strength, which is forged and drilled as a whole. Less processing defects, high reliability, good comprehensive high-temperature strength and wear resistance, high price, and usage temperature of 800-1200 degree .
2. Composite casting wear-resistant alloy: using composite armor technology, wear-resistant particles are added to the high-temperature alloy matrix, and precision casting is formed. No need for turning processing, the casing has high hardness, is resistant to high-temperature oxidation, has a few casting defects but does not affect high-temperature wear resistance and sealing. It is a relatively ordinary high-temperature wear-resistant casing, with a moderate price and a usage temperature of 800-1200 degree .
3. Ion implantation tungsten carbide: Using stainless steel as the substrate, ion implantation technology is used to inject tungsten carbide particles onto the surface of the casing. It has high hardness, high strength, high toughness, and is particularly wear-resistant. The thickness of the wear-resistant layer is 0.5-1.5mm, with external hardness and internal toughness. The smaller diameter can reach φ 8. Good surface quality, operating temperature 0-800 degree , with a service life of over 2 years in power plant coal mills.