Description

Blast furnace bell is a core large steel casting for feeding and sealing on blast furnace top. It features high temperature resistance, impact resistance, wear resistance, air tightness and fatigue resistance. As an integrally cast part, it has strict standards for casting, heat treatment, machining and non-destructive testing.
1.Exposed to high-temperature flue gas continuously, with surface temperature up to 300~500℃ and frequent cold & heat alternation.
2.Subject to continuous impact, abrasion and scouring from furnace burden.
3.Operate in dusty and corrosive gas environment.
4.Reciprocate thousands of times per day, belonging to fatigue loaded parts.

Advantages

Why Choose Tenfaye for Blast furnace bell? 
1.Good impact resistance and fatigue resistance: No crack, fracture or deformation under frequent movement and material impact.
2.High temperature resistance and dimensional stability: No softening or distortion at high temperature, and no cracking under cold-heat cycling.
3.Superior wear resistance: Resist long-term scouring and abrasion from furnace burden.
4.High precision of sealing surface: Smooth machined surface and uniform fitting clearance.
5.Strict NDT requirements: 100% UT and MT inspection on the main body, sealing surface and hinge areas.
6.No cracks, porosity or slag inclusion, complying with International standards UNI.EN ISO, AWS. ASTM. ASME and DIN standards,etc.
7.Strict tolerance control on mating surfaces to ensure flexible movement without jamming.
8.High precision of flange and hinge holes to match the furnace top transmission mechanism.