Roller Quenching Flow Zone Control for Metal Plate Strips
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Solution Overview
Problem
Existing roller quenching machines face issues with non-uniform water flow distribution and drainage, leading to uneven cooling and heat exchange in the high-pressure cooling section, affecting the quenching process and final shape of metal plate strips.
Innovation Solution
A roller quenching flow zone control device featuring middle and edge water diversion ring sleeves with spiral drainage grooves, designed to divert and drain cooling water uniformly across the width and length of the metal plate strip, enhancing drainage efficiency and heat exchange uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If spiral drainage grooves are designed in the spiral rollers to enhance water drainage efficiency, then the drainage speed is improved, but the water flow uniformity in the width direction deteriorates, causing plate shape problems
Solution Approach 1:
The spiral roller is segmented into multiple independent spiral drainage groove zones (first spiral drainage groove, second spiral drainage groove, third spiral drainage groove) with different rotation directions. This segmentation allows each zone to handle water drainage independently, achieving both high drainage speed and uniform water flow distribution across the plate width.
Solution Approach 2:
The invention uses asymmetric spiral groove configurations where adjacent spiral drainage grooves rotate in opposite directions. The first spiral drainage groove rotates in one direction while the second and third spiral drainage grooves rotate in the opposite direction. This asymmetric design creates balanced water flow patterns that prevent localized accumulation and maintain uniformity.
2Productivity
If the spiral roller uses opposite rotation directions on both sides of the centerline to drain water rapidly, then drainage efficiency is improved, but a processing groove exists in the center causing concentrated longitudinal water flow, influencing water flow uniformity
Solution Approach 1:
The central processing groove problem is resolved by segmenting the drainage function into multiple spiral groove zones. Instead of a single central groove causing concentrated flow, the invention distributes drainage across first, second, and third spiral drainage grooves with alternating rotation directions, eliminating the concentrated flow issue while maintaining high drainage efficiency.
Solution Approach 2:
Different regions of the spiral roller are given different local qualities through the asymmetric spiral groove configuration. The first spiral drainage groove on one side rotates in one direction while the second and third spiral drainage grooves on the other side rotate in the opposite direction, creating locally optimized water flow patterns that collectively achieve uniform overall distribution.
3Loss of time
If drainage grooves are designed in 1/4 and 3/4 positions to enhance drainage efficiency, then water removal speed is improved, but flow uniformity in the width direction is influenced, affecting quenching uniformity
Solution Approach 1:
The drainage function is segmented into three distinct spiral drainage groove zones positioned at different locations (including 1/4 and 3/4 width positions). Each zone operates independently with controlled rotation directions, enabling rapid water removal from all regions simultaneously while maintaining uniform quenching through the alternating rotation pattern.
Solution Approach 2:
The asymmetric configuration of spiral drainage grooves with alternating rotation directions ensures that water is drained efficiently from all width positions (including 1/4 and 3/4 positions) without creating uniformity issues. The opposite rotation directions of adjacent grooves balance the water flow patterns, achieving both rapid removal and uniform quenching.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device ensures uniform cooling and rapid drainage of residual water, improving heat exchange efficiency and maintaining the flatness and uniformity of the quenched metal plate strips by controlling water flow and preventing local accumulation.
Implementation Method 1
spiral drainage grooves are designed in the outer surfaces of the semicircular water diversion ring sleeves, the rotation direction of the spiral drainage grooves in the outer surfaces of the upper left semicircular water diversion ring sleeve and the lower left semicircular water diversion ring sleeve is consistent with that of the drainage groove in the left connected spiral roller
Implementation Method 2
high-pressure and large-flow cooling water impacts the upper and lower surfaces of the plate strip at a high speed and pierces the vapor films on the surfaces to realize single-phase forced convection heat exchange directly with the wall surface
Implementation Method 3
the heat exchange efficiency of the wall surface is high, and the heat exchange controllability is good
Data Source
AI summary
Heat treatment equipment for metal plate strips, and a roller quenching flow zone control device for metal plate strips. The device includes a middle water diversion ring sleeve and edge water diversion ring sleeves; the middle water diversion ring sleeve is installed at the middle processing groove in a slit nozzle rear spiral roller and a high-density nozzle rear spiral roller in a high-pressure cooling section of a roller quenching machine; and the edge water diversion ring sleeves are installed at the processing grooves in ¼ and ¾ positions in the width direction of the slit nozzle rear spiral roller in the high-pressure cooling section of the roller quenching machine. This can effectively realize uniform distribution of cooling water on the surface of the plate strip, reduce the phenomenon of local non-uniform cooling caused by siltation of cooling water.