Aluminum Alloy Wheel Casting-Spinning Process With Adaptive Molds
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Solution Overview
Problem
The existing manufacturing process for cast-spun aluminum alloy wheels is inefficient, leading to high material utilization issues, high costs, and inability to achieve concurrent casting and spinning, which hinders automatic line production and fails to meet customer quality standards due to safety hazards and incomplete inspections.
Innovation Solution
A process that includes water-cooled molds for improved casting efficiency, adaptive spinning molds to prevent defects, thermal soaking to utilize residual heat, and direct thermal treatment to reduce deformation, along with de-flashing and X-ray inspection to ensure quality, while eliminating pre-machining and cooling steps to save resources and time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional air cooling and pre-machining are used, then manufacturing completeness is improved, but production cycle time increases and material utilization decreases
Solution Approach 1:
The patent removes unnecessary process steps (air cooling, pre-machining) from the manufacturing sequence, extracting only the essential operations needed for quality production. This reduces the production cycle while maintaining reliability through optimized essential steps.
Solution Approach 2:
The patent implements continuous production by eliminating idle cooling periods and integrating processes so that casting transitions directly to spinning without interruption. The mold is immediately reused for the next casting cycle, maintaining continuous useful action throughout the production line.
2Manufacturing precision
If conventional casting and spinning processes are used separately, then process control is improved, but production efficiency decreases
Solution Approach 1:
The patent merges casting and spinning into an integrated concurrent process where both operations occur simultaneously on the same wheel blank. This combination maintains precise control over both processes while dramatically improving production efficiency by eliminating sequential waiting time.
Solution Approach 2:
The casting process is optimized to produce blanks with precise dimensions and properties in advance, preparing them specifically for the subsequent spinning operation. This preliminary action ensures that when spinning occurs, the material is already optimally positioned for high-speed deformation.
3Manufacturing precision
If material removal for pre-machining is performed, then dimensional accuracy is improved, but material utilization rate decreases
Solution Approach 1:
The patent extracts and eliminates the pre-machining step entirely, removing unnecessary material removal operations. Dimensional accuracy is maintained through optimized casting and spinning processes that achieve final dimensions directly, preventing material loss.
Solution Approach 2:
The patent changes the dimensional control parameters from post-casting machining to in-process control during casting and spinning. By adjusting temperature, pressure, and deformation parameters during these processes, final dimensions are achieved without material removal.
4Device complexity
If conventional spinning without adaptive mold adjustment is used, then process simplicity is improved, but product quality consistency decreases
Solution Approach 1:
The patent introduces dynamic adjustment capabilities to the spinning mold, allowing real-time modification of mold parameters during the spinning process. This enables adaptation to variations in material properties and process conditions, ensuring consistent product quality while maintaining relatively simple overall process architecture.
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 process reduces production time by 30%, improves wheel quality by 6-10%, decreases weight by 0.7-1.1 kg, and lowers costs by 18 yuan per piece, making it suitable for automatic production and enhancing market competitiveness.
Implementation Method 1
a casting mold is cooled with water
Implementation Method 2
the water-cooled mold dispenses with air cooling
Implementation Method 3
An annular soaking furnace is adopted, the temperature is set in three zones
Implementation Method 4
the furnace gas temperature is set at 380-400° C
Implementation Method 5
the solution treatment temperature is set at 545° C, the holding temperature time is set at 240-280 min
Implementation Method 6
the aging temperature is set at 155° C, and the holding temperature time is set at 150-180 min
Data Source
AI summary
A process for manufacturing an aluminum alloy wheel includes: casting, de-flashing, soaking, spinning, thermal treatment, de-gating, X-ray and machining. During the casting, a casting mold is cooled with water, and a cast blank is produced from carrying out the casting. The de-flashing includes removing flashes of the cast blank at a rim of the cast blank with a de-flashing device. The soaking includes reheating on the cast blank that has been de-flashed. The spinning includes an adaptive spinning mold. The thermal treatment includes direct solution treatment and aging on the cast blank in a thermal treatment furnace after spinning.