High-Temperature Forming Device for Germanium Wafers
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Solution Overview
Problem
Current methods for preparing imperfect single-crystal germanium sheets for neutron monochromators are inefficient due to a lengthy process involving multiple cycles of deformation, loading, vacuum protection, heating, and cooling, which limits production efficiency.
Innovation Solution
A high-temperature forming device equipped with a heating electric furnace, temperature control system, vacuum protection system, die system, and auxiliary components that allow for simultaneous bending and leveling of germanium sheets, reducing the need for multiple deformation cycles and enhancing production efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single-crystal hot-pressing deformation technology is used to prepare imperfect crystal wafers, then the quality of single-crystal wafers can be maintained, but the production process becomes lengthy and efficiency decreases due to repeated cycles of forward bending, leveling, and reverse bending
Solution Approach 1:
The patent combines multiple deformation operations (forward bending, leveling, reverse bending) into a single integrated device. The device includes a first pressing assembly for forward bending, a second pressing assembly for leveling, and a third pressing assembly for reverse bending, all capable of operating simultaneously on different wafer substrates within the same vacuum chamber, thereby reducing the number of repeated cycles and improving production efficiency while maintaining wafer quality
Solution Approach 2:
The pressing mechanism is segmented into multiple independent pressing assemblies (first, second, and third pressing assemblies), each capable of performing a specific deformation operation. These assemblies can operate independently or in coordination, allowing different deformation steps to be performed simultaneously on different substrates, thus eliminating the sequential bottleneck in the traditional process
2Reliability
If multiple deformation procedures are performed in separate stations, then each deformation step can be completed, but the production process time increases due to repeated loading, vacuum protection, heating, forming, and cooling at each station
Solution Approach 1:
The patent merges multiple deformation procedures into a single integrated device with multiple pressing assemblies that can operate simultaneously. All assemblies share common vacuum, heating, and control systems, allowing multiple substrates to undergo complete deformation cycles (loading, vacuum protection, heating, forming, cooling) at the same time rather than sequentially, dramatically reducing total process time while maintaining procedural reliability
Solution Approach 2:
The device incorporates universal systems that serve multiple functions: a single vacuum system serves all pressing assemblies, a single heating system provides thermal treatment for all substrates, and a unified control system coordinates all deformation operations. This multi-functionality eliminates the need for separate stations and reduces overall process time
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 improves production efficiency by enabling the simultaneous formation of two germanium sheets, reducing cooling time, and protecting the operation area from heat, while maintaining the quality of imperfect single-crystal wafers for neutron monochromators.
Implementation Method 1
heating electric furnace
Implementation Method 2
vacuum protection system
Data Source
AI summary
A high-temperature forming device for imperfect single-crystal wafers used for a neutron monochromator includes a heating electric furnace, a temperature control system, a die system, a loading system, a vacuum protection system, and an auxiliary system. Where a furnace mouth of the heating electric furnace faces downwards, the heating electric furnace can be lifted vertically or a hearth of the heating electric furnace can be opened and closed. A vacuum protection cavity is formed by a glass cover and a blocking flange, a through hole is formed in one end of the glass cover, and the other end of the glass cover is closed. An operation opening is formed in the glass cover, the die system includes an upper die, a middle die, and a lower die, the middle die is a composite die.