Технические параметры износостойких труб

Технические параметры износостойких труб

1. Общие спецификации
1.1. Дизайн, производство, Техническая производительность, химический состав, физические свойства, упаковка, and transportation of wear-resistant pipes must comply with the “Technical Conditions for Wear-Resistant Pipes in the Power Industry” (DL/T 680-2015) of the People’s Republic of China. The manufacturing method can be selected by the bidder, as long as product performance is ensured.

1.2. The wear-resistant pipe is lined with silicon carbide ceramics and is sintered and cast as a single unit.

1.3. The inner and outer surfaces of the silicon carbide wear-resistant pipes should be smooth and uniform. There should be no burrs, трещины, loose areas, pores, bubbles, or other surface defects. The paint should be even, and the flow direction and pipe number should be clearly marked.

1.4. The lining material is a high-quality, high-temperature sintered silicon carbide ceramic, resistant to wear and erosion. The inner surface must be smooth and crack-free, with a smooth transition and no noticeable marks, residues, or burrs. The outer material is high-quality carbon steel with an 8mm wall thickness.

2. Physical and Chemical Properties
1.5. The physical and chemical indicators are as follows:

SiC content ≥ 90%
Диапазон рабочих температур: 50℃ – 800℃
Mohs hardness ≥ 9.0
Твердость по Роквеллу (HRA): 91-93
Wall and SiC layer thickness to meet supply requirements as outlined in item 2.

3. Сварка и сборка
1.6. The inlet and outlet welding surfaces must be grooved to accommodate on-site manual arc welding. No special welding requirements should be necessary during on-site assembly to ensure optimal welding performance.

1.7. Silicon carbide ceramics are made using SiC grains as the primary raw material. The manufacturing process involves mixing, molding, сушка, sorting, kiln firing, inspection, шлифование, рисование, and marking to complete production.

4. Service Life and Certification
1.8. The wear-resistant pipe must be designed to ensure no wear or leakage during the 5-year operational period, with the remaining wall thickness meeting the calculated strength value.

1.9. The product must be accompanied by a quality certificate when leaving the factory.