Vacuum-Sealed Terminal Leads | ±0.02mm Precision Stamped | 200SPM | ZQ Tech
Product Description
Manufacturing Process & Functionality
Crafted from iron-nickel alloy sheets, our terminal leads are precision-engineered to maintain vacuum integrity and secure critical components in magnetron systems. Key production steps include:
Blanking & Punching: Precise material cutting and hole formation with tolerances ≤±0.02mm.
Flanging & Bending: Automated edge flanging and 90°/180° bending for rigid structural support.
Optimized for 200 strokes per minute (SPM) on high-speed presses, this process ensures rapid, consistent output while adhering to strict dimensional limits (max. part size: 70mm).

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Products details

Vacuum-sealed terminal lead core function

Designed for magnetrons in microwave ovens and medical devices, our vacuum-sealed terminal leads prevent gas leaks at rates of <10 <sup> -9 </sup>  Pa·m <sup> 3 </sup> /s . Iron-nickel alloy (4J50) has the following properties:

  • Coefficient of thermal expansion (CTE) 5.2× 10 -6 / K

  • Tensile strength ≥520MPa

Technical Standards

scope value Industry Standard
tolerant ≤±0.02mm ±0.05 mm
Production speed 200 Malay 120 SPM
Maximum part size 70 mm 50 mm
Material Iron-nickel alloy (4J29/4J50)

Source:  ASM Aerospace Materials Handbook

Vacuum integrity mechanism

Sealing  verified by MIL-STD-883 Method 1014 

Precision stamping lead production workflow

 First stage – fine tolerance blanking

  • Laser-guided punching dimensional accuracy ≤±0.02mm

  • Material utilization rate: 98.5% (industry average: 92%)

Stage 2 – Hermetic Seal Formation
Automatic Flanging/Bending at 200 SPM:

Vacuum-Sealed Terminal Lead Bending Process

 Performance Advantages

  • 40% faster assembly : pre-formed 70 mm leads reduce soldering steps

  • Zero leakage guarantee : Passed IEC 60601-2 medical vacuum standard

  • 200SPM High output : 288,000 units per day

 Industrial Application

department Use Cases Certification
Medical MRI Microwave ISO 13485
Industrial Plasma generation system Semiconductor F47
consumer Microwave oven cavity UL 923

Why choose us?

Mass production400,000 units per day,  meeting large-scale OEM needs.

Precision control : Strict adherence to a maximum part size of 70 mm ensures compatibility.

Speed and efficiency : 200 SPM production minimizes lead times without compromising quality

Process stability : sophisticated tool design eliminates flange cracks and material fatigue.

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