Continuous Casting Drawing Roll Depressed Part Support
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Continuous casting equipment faces issues with uneven wear and shortened lifetime of drawing rolls due to depressed parts formed on casting products, leading to insufficient drawing power and unstable casting processes.
Innovation Solution
The equipment incorporates a casting product drawing apparatus with rolls that include a depressed part supporting mechanism, ensuring adequate contact area and reduced wear by maintaining a specific axial-length ratio with the large-diameter part forming the depressed area, and optionally using divided rolls to distribute load and extend bearing part lifetime.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If casting product reduction rolls with a large-diameter part are used to apply reduction to the width-direction center region, then internal defects such as center segregation and porosity are suppressed, but a depressed part is formed on the casting product long side surface causing uneven wear and shortened lifetime of drawing rolls
Solution Approach 1:
The casting product drawing rolls are designed with a depressed part supporting part that has a different diameter (larger) than the main roll body, creating local quality variation. This allows the depressed part supporting part to specifically contact and support the depressed part on the casting product, while the main roll body contacts the flat regions, distributing wear uniformly across all rolls.
2Force
If casting product drawing rolls contact the depressed part region, then drawing power is reduced due to decreased contact area, but without contact the drawing rolls cannot adequately support the casting product
Solution Approach 1:
The drawing rolls incorporate a depressed part supporting part with increased diameter that locally contacts the depressed part region of the casting product. This local geometric modification ensures adequate contact area and drawing power in the depressed region while maintaining proper support across the entire casting product width.
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
This configuration extends the lifetime of drawing rolls, ensures stable casting with sufficient drawing power, and prevents excessive wear and damage to bearing parts.
Implementation Method 1
a casting product reduction apparatus configured to apply pressure to a casting product
Implementation Method 2
a casting product drawing apparatus configured to sandwich and draw the casting product
Data Source
AI summary
Continuous casting equipment includes a casting product reduction apparatus and a casting product drawing apparatus, the casting product reduction apparatus including a pair of casting product reduction rolls that sandwich and apply pressure to a casting product and being configured to apply reduction to the casting product, the casting product drawing apparatus being provided in a following stage of the casting product reduction apparatus and configured to sandwich and draw the casting product with a pair of casting product drawing rolls. At least one of the pair of casting product reduction rolls includes a large-diameter part that projects radially outward in an axial-direction center region and applies pressure to a width-direction center region of the casting product. The casting product that is subjected to reduction by the casting product reduction apparatus has a depressed part corresponding to the large-diameter part. At least one of the pair of casting product drawing rolls of the casting product drawing apparatus includes a depressed part supporting part that contacts with and supports the depressed part, and is driven by a driving mechanism. An axial-direction length L2 of the depressed part supporting part and an axial-direction length L1 of the large-diameter part of the casting product reduction roll satisfy 0.5×L1≦L2<L1.