Product Overview

The newly developed wear-resistant thermocouple adopts plasma spraying technology, wear-resistant protective tubes made of different materials such as high chromium cast iron and high-temperature alloys, specially designed and manufactured for measuring high, medium and low-temperature wear-resistant environments. It can be applied to industrial sites such as circulating fluidized beds, boiling furnaces, cement rotary kiln tail chambers, coal powder furnaces, ball mills, etc. It adopts armored or high-temperature armored cores, matched with wear-resistant sleeves of different materials and specifications, with good wear resistance, vibration resistance and thermal shock resistance. In various harsh environments with extremely high wear levels, the service life of the product can reach several times that of ordinary products, greatly improving production efficiency and reducing cost consumption.
Using special heat-resistant and wear-resistant alloy materials as the temperature measuring outer protective tube and wear-resistant head, with an armored core inside, it can not only have high corrosion resistance to fly ash particle erosion, but also provide good protection for the inner core under high temperature conditions. Using flange or threaded connection, it can measure temperature between 0 and 1200 ℃ for a long time, making it an ideal temperature sensor for use in high-temperature and wear-resistant environments in the metallurgical industry.

According to the characteristics of wear-resistant sleeves, they can be divided into the following categories

1. Wear resistant high-temperature alloy: a specially designed pure alloyed high-temperature alloy with high temperature oxidation resistance and extremely high high-temperature strength, produced by vacuum smelting according to the characteristics of high-temperature and wear-resistant environments. It is forged and perforated as a whole. Low processing defects, high reliability, good comprehensive performance of high temperature strength and wear resistance, high price, and operating temperature of 800-1200 ℃.
2. Composite casting wear-resistant alloy: using composite armor technology to add wear-resistant particles to high-temperature alloy as the matrix, precision casting is formed. No need for turning processing, high hardness of the casing, resistance to high-temperature oxidation, with slight casting defects but not affecting high-temperature wear resistance and sealing. It is the most commonly used high-temperature wear-resistant casing, with a moderate price and a usage temperature of 800-1200 ℃.
3. Ion implantation of tungsten carbide: Using stainless steel as the substrate, tungsten carbide particles are injected into the surface of the casing through ion implantation technology. It has the characteristics of high hardness, high strength, and high toughness, especially wear-resistant, with a wear-resistant layer thickness of 0.5-1.5mm, hard on the outside and tough on the inside, a minimum diameter of up to φ 8, good surface quality, and a service temperature of 0-800 ℃. The service life of coal mills in power plants is over 2 years.

Main technical indicators

★ Wear resistant protective tube

Thermocouple (resistance)

Same as the assembly type, thermocouple level I and thermal resistance level A are ordered according to the agreement

★ Non wear-resistant protective tube material 1Cr18Ni9Ti

★ Electrical outlet: M20 × 15, NPT1/2

★ Protection level: IP65

Product Model Technical Indicators

Model representation

Typical model example

Wear resistant thermistor, K-index fixed threaded connection, wear-resistant protective tube made of high-grade material high chromium cast iron, 200mm long with an outer diameter of φ 25, thermocouple length of 650mm, insertion depth of 500mm, wear-resistant length of 300mm, selected as WRNM-232C L × I1 × I2=6500 × 500 × 300.

Model specification Type specification

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