1. The selection of Abrasion-resistant ceramics
The abrasion-resistant lined pipe is composed by steel pipe, adhensive and abrasion-resistant ceramic, we use 20 # seamless steel pipes shaping with hot bending (it is different from centrifugal casting or steel plate rolling), the ceramic tiles bonding with GWJ-350 high temperature-resistant inorganic adhesive which was developed by TsingHua University and Kingcera
to affix abrasion-resistant ceramic in the steel pipes, we use miss match installation instead of directly bonding (this technology was used in the bridge building a thousand years ago), and forms a firm wear-resistance layer after heating solidification. This product is applicable for the pneumatic powder-feeding, and can be used under a temperature of 350℃without aging and peeling for long life. The service life is 4-5 times than the normal abrasion-resistant pipes.
■ Super wear-resistant, high density: we use 95% of chromium corundum, 100 tons dry-pressing.
■ Elbows formed by hot-bending, the outside of the bending part are seamless which is wear-resistant and can prolong the service life.
■ Firmly bonding without pealing: we use epoxy adhesive and miss-match installation technology, so that there is no straight-seam.
■ High temperature and ageing resistance: we abandon the traditional organic bond, and use inorganic bond which is ageing resistance.
■ High pressure resistance: We use 20# seamless steel pipe, which is high pressure resistance and avoiding welding leakage.
■ The pipe with smooth inner wall which can make the materials flow smoothly: we use seamless steel pipes which has smooth inner wall that can reduce weariness, and the height tolerance of ceramics is below 0.5mm.
3. Application Guidance
■ Avoid welding on site, the welding layer should be 30mm above the ceramic layers; according to our experiences , if you need a shot welding (for example spot welding) or must welding, watering after welding, which will reduce the damage of adhesive layer.
■ Avoid striking and throwing the pipes during transportation and installation.
■ To achieve the best abrasion-resistant solutions, thicken ceramic liners can be used in the elbow which has serious abrasions.