Welding Wear Resistant Elbow Impact Resistance For Pulverized Coal Pipe

Product introduction

The wear-resistant elbow for pulverized coal pipes of the boilers in thermal power plants must be designed to be proof, anti-corrosion, rainproof, anti-freezing, and other factors. The main points are wear and corrosion resistance. The wear resistant elbow for pulverized coal pipes is particularly worn. It has been a key part of power plant maintenance for a long time. The comprehensive performance of the pipeline system, especially the wear resistance, is directly related to the operating cost and economic benefits of the entire power plant. It is a key issue that must be considered in the engineering and maintaining new power plants.

Given the above situation, we have integrated various previous research results, summed up the use of wear-resistant elbows for pulverized coal pipes in thermal power plants over the years, and drew on the advanced experience of the same industry in the world. The focus is to comprehensively consider the wear resistance and high-temperature resistance of the pipeline. Performance and anti-corrosion performance, and comprehensively considered from the convenience of construction, lower manufacturing cost, and relatively simple production process, several mainstream wear-resistant forms of wear-resistant elbow for pulverized coal pipes have been designed for users to choose from and use. Solution: Lined with wear-resistant ceramic patch composite pipe.

Product Features

1. Ceramic sheet: The structure of the wear-resistant ceramic sheet is "three-sided pressure, three-sided back pressure, positive and negative arc", and the tiles are inlaid and connected, and they have overall and partial anti-release properties.

2. Structural layer: high-temperature resistant, high-strength, low-expansion-coefficient inorganic adhesive is used between the ceramic sheet and the steel body as the bonding layer between the steel body and the ceramic sheet. In the performance of the junction, no delamination phenomenon occurs.

3. Welding process: Process 1: Directly weld the ceramic sheet with the tapered hole with buckle to the steel body directly with a heat-resistant steel bowl, and then use the buckle ceramic to coat the tapered hole on the ceramic sheet, and the overall appearance is all For the ceramic surface: Process 2: Adopt energy storage welding process to weld the ceramic sheet with a tapered hole to the steel body through special wear-resistant bolts.

Product Details

Product parameters

1. wear resistant ceramic sheet (type 95 alumina wear-resistant ceramic)

Basic characteristics: high density, high hardness, high wear resistance, performance second only to diamond.

Technical parameters: It is sintered at a high temperature of 1760℃. The content of AL2O3 is 95% as tested by the national authoritative testing department, Rockwell hardness ≥86 (HRA), tensile strength ≥550Mpa, density ≥3.8g/cm, and flexural strength ≥370Mpa.

2. Bonding layer (inorganic glue adhesive)

Basic features: high adhesion, high waterproof, high-temperature resistance, developed based on domestic high-tech research results.

Technical parameters: The national authoritative testing department detects the tensile strength of the adhesive surface ≥24.2Mpa, the tensile strength at 260℃ ≥18Mpa, and the shear strength of the adhesive surface ≥7.08Mpa.

3. Welded steel bowl and bolts (weldable wear-resistant and heat-resistant steel)

Basic features: anti-wear, high welding strength, high-temperature resistance, good thermal stability.

Technical parameters: Tensile strength of welding surface ≥199Mpa; Shear strength of welding surface ≥32.2Mpa.

Product advantages:

1. Good wear resistance and long service life: the wear resistance of the pulverized coal pipe wear-resistant elbow is very good, which is better than other ordinary wear resistant materials.

2. Convenient installation: flexible and diverse connection methods. The wear-resistant elbow of the pulverized coal pipe can be connected by welding, flange, and other connection methods.

3. Eccentric structure: Effective cost-saving: The eccentric structure is adopted for the alumina ceramic lining of the elbow, which further improves the overall service life of the elbow without increasing the cost.

4. Impact resistance: The wear-resistant elbow of pulverized coal pipe has excellent resistance to external impact.

5. Reliable performance: The wear resistant elbow of the pulverized coal pipeline is a seamless steel pipe that is integrally heated and bent, and the lining material will not fall off.