Arc-Bottom Titanium Cup Welding Process for Roundness Control
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Solution Overview
Problem
The manufacturing process of arc-shaped bottom titanium cups faces issues such as out of roundness, welding displacement, and oxidation at welding sites, leading to inconsistencies and reduced precision in the final product.
Innovation Solution
A manufacturing process involving an inner support ring, primary and secondary crystallization in vacuum furnaces, continuous automatic laser welding with gas protection, and anodic oxidation to ensure precise welding and surface quality, along with surface polishing and vacuum processing to maintain roundness and thermal insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a crystallization or processing molding process is used to manufacture titanium cups, then the cups can be formed, but out of roundness occurs especially in large arc vacuum bottoms
Solution Approach 1:
The inner support ring is installed into the titanium cup shell before the crystallization process. This preliminary action provides internal support during the forming process, preventing the vacuum bottom from deforming and maintaining roundness even when large arc shapes are created through crystallization.
Solution Approach 2:
The inner support ring acts as an intermediary element between the molding process and the titanium cup shell. It mediates the crystallization process by providing internal support and constraint, allowing the shell to be formed while maintaining dimensional accuracy and preventing out-of-roundness.
2Strength
If welding is performed on titanium cups, then the cup body and vacuum bottom can be joined, but offset dislocation and oxidation occur at welding positions
Solution Approach 1:
The inner support ring serves multiple functions: it maintains roundness during crystallization, provides positioning reference during welding to prevent offset dislocation, and supports the vacuum bottom during assembly. This multi-functionality ensures welding precision while maintaining joint strength.
Solution Approach 2:
The patent replaces manual welding positioning with a mechanical positioning system based on the inner support ring. The ring's precise dimensions and fit provide automatic alignment and positioning, substituting for complex mechanical positioning devices and ensuring consistent welding precision.
3Strength
If welding is performed on titanium cups, then the cup body and vacuum bottom can be joined, but serious oxidation happens at welding positions
Solution Approach 1:
The inner support ring creates a protected environment during welding by providing a barrier and reference structure that enables controlled welding conditions. The ring's presence allows for proper shielding gas application and prevents direct exposure to oxidizing atmosphere at the welding zone, reducing oxidation while maintaining joint strength.
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 process effectively prevents out of roundness, ensures precise welding, and enhances the thermal insulation and appearance of the titanium cups, resulting in a consistent and high-quality product with improved welding precision and reduced oxidation.
Implementation Method 1
carrying out the primary crystallization on the titanium cup shell and the inner support ring by adopting a vacuum furnace A; adjusting a vacuum degree in the vacuum furnace A to be less than 0.0001 Pa, setting temperature in the vacuum furnace A from 1100° C. to 1200° C. and continuously heating the titanium cup shell and the inner support ring for 3-10 hours, so that the titanium cup shell and the inner support ring are adhered together
Implementation Method 2
welding the titanium cup body and the titanium cup vacuum bottom by adopting the continuous automatic laser welding equipment having the gas protection function, melting titanium metal at a joint of the titanium cup body and the titanium cup vacuum bottom by a welding laser
Implementation Method 3
welding the titanium cup body and the titanium cup vacuum bottom by adopting the continuous automatic laser welding equipment
Implementation Method 4
carrying out the secondary crystallization by adopting a vacuum furnace B; adjusting a vacuum degree in the vacuum furnace B to be less than 0.001 Pa, setting temperature in the vacuum furnace B from 1100° C. to 1200° C., and keeping the temperature for 3-10 hours
Implementation Method 5
placing the arc-shaped bottom titanium cup in an environment of 800° C.-1000° C. for vacuum processing, and keeping the vacuum processing for 3-10 hours
Data Source
AI summary
The present disclosure provides a manufacturing process of an arc-shaped bottom titanium cup, including: S1: pressing an inner support ring; S2: primary crystallization; S3: matching; S4: welding opening parts; S5: pressing a titanium cup vacuum bottom; S6: welding the titanium cup vacuum bottom; S7: secondary crystallization; S8: vacuumizing; S9: detecting a thermal insulation function; S10: welding a titanium cup bottom plate; S11: surface polishing; and S12: oxidation processing. The present disclosure provides an inner support ring structure, the inner support ring always holds the titanium cup vacuum bottom round and maintains the titanium cup vacuum bottom in a high degree of roundness, thereby ensuring that a surface of a titanium cup shell and a titanium cup vacuum bottom is flat and smooth. The arc-shaped bottom titanium cup is clamped by adopting an upper mold and a lower mold, so that the arc-shaped bottom titanium cup is accurately limited.