Cast iron cooling stave

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Iron Casting cooling stave

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product details

Parameters

The cast iron cooling stave produced by patented technology with independent intellectual property rights has the following characteristics:

1. The gap between the water pipe and the body is small, the air gap thermal barrier is small, and the cooling wall heat conduction is good

The cast iron stave is manufactured in accordance with the specifications. The general design calculation gap is 0.02mm. The air gap between the water pipe and the wall of our company's cast iron stave product is less than 0.05mm.

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2. The inner wall of the water pipe is smooth, without secondary oxidation

Since the pouring atmosphere of lost foam casting is a reducing atmosphere, there is no oxidation on the inner wall of the water pipe during the pouring process. It can be seen from the dissected section of the cooling wall that the inner wall is very smooth.

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3. Good effect of water pipe anti-carburizing treatment

The YB/T4073-2007 standard stipulates that no hypereutectoid steel can appear on the surface of the water pipe. The depth of the carburized layer of the water pipe surface of our company's cast iron stave products is better than the anti-carburization requirements specified in the standard.

4. Excellent performance of ductile iron cooling stave core

The core performance of the stave is the most important indicator that determines the service life of the stave. The YB/T4073-1991 old standard once stipulated that the core part of the cooling stave body should be drawn out: elongation δ5 ≥ 6%, tensile strength σb ≥ 320Mpa, but because it is too difficult to reach the standard, YB/T4073-2007 is new The standard only stipulates "metallographic inspection: spheroidization level 3~5, matrix ferrite content ≥ 80%".

The company adopts a special process. The mechanical properties of the core part of the ductile iron stave body with a thickness of less than 220mm can reach: elongation δ5 ≥ 8%, tensile strength σb ≥ 320Mpa. Under normal use conditions, the ball The iron cooling stave can meet the service life of more than ten years.

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Metallographic image of our company's ductile iron issued by VERDES in Spain Core drawing of cooling stave

5. The cooling water pipe has a high ball penetration rate and a small amount of steel pipe wall thickness reduction

The steel pipe simmering bend is made by cold simmering with an electric hydraulic pipe simmering machine. The "U" water pipe cold simmered by the electric hydraulic pipe simmering machine can pass through wooden balls with a diameter of more than 80% of the inner hole of the pipe, which is higher than the national 76% pass ball standard, and the water flow is large, so that the cooling wall has higher cooling Strength: The wall thickness reduction of the water pipe is less than 15%, which is better than the national standard of less than 18%, and the service life of the water pipe is longer.

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