Custom Machinable Glass Ceramic Plate (Sheet) with Tapped Holes, Slots, and Complex Profiles

Machinable Glass Ceramic Plate — Application Scenarios

• Vacuum Equipment & Scientific Instruments

  ✅Key Advantages

  1. Vacuum-ready material behaviour: Zero porosity and published vacuum suitability when properly baked out.

  2. Stable insulation at temperature: Supports 800°C continuous operation under load for thermal isolation structures.

  3. Precision fit capability: Published guidance supports dimensional control to ±0.013 mm for suitable features.

  ✅ Problem Solved

  A vacuum instrumentation builder replaced an aluminum support plate that caused heat leak and electrical noise near a high-voltage region. A machinable glass ceramic plate version reduced heat transfer using the published low thermal conductivity value (1.46 W/m·K at 25°C) while keeping electrical isolation supported by published dielectric strength (45 kV/mm AC). Tight-fit alignment features were held using the published tolerance guidance (±0.013 mm), reducing rework during assembly. The team also specified an edge rule and packaging controls to reduce chip-related rejects during installation.

• Laser Assemblies & Opto-Mechanical Mounting

  ✅Key Advantages

  1. Thermal break function: Published 1.46 W/m·K thermal conductivity helps limit heat transfer between subassemblies.

  2. Finish options for interfaces: Published finished surface guidance <0.5 µm and polished options down to 0.013 µm for controlled contact surfaces.

  3. Electrical insulation margin: Published 45 kV/mm AC dielectric strength supports high-voltage spacing in compact layouts (per test conditions).

  ✅ Problem Solved

  An opto-mechanical integrator needed an insulating mount plate that would not creep like high-temperature plastics near warm zones. The machinable glass ceramic plate supported continuous use at 800°C under load (material rating) and reduced heat flow using the published conductivity (1.46 W/m·K). The mounting face was specified with a fine finished surface target guided by published finish capability (<0.5 µm), improving interface consistency. Electrical isolation performance aligned with published dielectric strength values, reducing the need for oversized clearances.

• High-Temperature Electrical Insulation Fixtures & Thermal Breaks

  ✅Key Advantages

  1. High-temperature rating: 800°C continuous under load; 1000°C peak under no load.

  2. Dimensional stability: Published CTE 9.0 ×10⁻⁶/K (25–300°C) supports predictable fits in mixed-material assemblies.

  3. High-voltage performance: Published 129 kV/mm DC dielectric strength (per stated thickness/test conditions) for compact insulator designs.

  ✅ Problem Solved

  A thermal processing fixture required an insulating plate that maintained geometry and electrical separation across repeated heat cycles. The machinable glass ceramic plate was selected for the published continuous operating rating (800°C under load) and predictable expansion behavior (published CTE 9.0 ×10⁻⁶/K, 25–300°C). The design used DC dielectric strength guidance (129 kV/mm) to size the insulation path without unnecessary bulk. A defined chamfer and handling rule reduced edge damage during fixture swaps, improving yield across repeated installs.

Machinable Glass Ceramic Sheet — Use Guide

• Installation

  1. Confirm datum surfaces and orientation marks before mounting.
  2. Use flat, clean contact surfaces; avoid point loads near edges and thin webs.
  3. If using fasteners, use controlled torque and consider washers/spreaders to distribute load.
  4. Keep clearance around sharp internal corners; avoid forcing parts into interference fits.

• Operation

  1. Ramp temperature based on your system’s thermal profile; avoid rapid temperature shock when the plate has thin features.
  2. Keep electrical clearance consistent with your voltage and environment; treat dielectric strength values as guidance tied to test conditions.
  3. For vacuum use, follow your chamber’s preparation practice (clean handling, controlled bakeout, and contamination control).

• Storage

  1. Store plates flat with separators; avoid stacking without protective layers.
  2. Keep away from impacts and vibration that can create micro-chips on edges.
  3. Label by revision to prevent mixing similar parts with different tolerances.

• Cleaning

  1. Remove machining dust with non-shedding wipes and controlled air; avoid abrasive rubbing on functional faces.
  2. For precision interfaces, use a cleaning method consistent with your assembly cleanliness class and inspection plan.

• Common Misuse Points + Fix

  1. Edge chipping during assembly → Add chamfer/radius on drawing, use edge-protected handling trays, and avoid tool contact near edges.
  2. Thread damage or pull-out → Specify thread engagement depth, use controlled torque, and consider inserts or redesign if frequent service cycles are expected.
  3. Cracking after thermal events → Review ramp/soak transitions, reduce sharp internal corners, and avoid clamping schemes that restrain thermal expansion.

FAQ — Machinable Glass Ceramic Plate

1. Q: What makes a machinable glass ceramic plate different from alumina or glass?
   A: A machinable glass ceramic plate can be CNC-machined with standard metalworking tools into complex features, while still providing electrical insulation and high-temperature stability.
2. Q: Will thin walls or narrow ribs chip or crack during machining?
   A: Thin sections are possible, but edge rules, corner radii, toolpath strategy, and handling controls are typically required to reduce chipping risk on machinable glass ceramic plate features.
3. Q: How should I specify threads in a machinable glass ceramic plate (tapped holes)?
   A: Specify thread standard, engagement depth, and tolerance; for repeated assembly cycles, define torque limits and consider design changes to reduce thread wear in machinable glass ceramic plate parts.
4. Q: Is a machinable glass ceramic plate suitable for vacuum use and bakeout?
   A: It is commonly selected for vacuum assemblies because it is dense and non-porous; you should state your vacuum level, bakeout temperature, and cleanliness expectations so the machinable glass ceramic plate can be prepared accordingly.
5. Q: How does temperature cycling affect fit and alignment?
   A: Specify operating temperature range and mating materials; the assembly should account for thermal expansion mismatch so the machinable glass ceramic plate does not get clamped into stress during heat cycles.

Customer Reviews about Machinable Glass Ceramic Plate

• ⭐️⭐️⭐️⭐️⭐️
  We moved our spacer plates to a machinable glass ceramic plate design and got consistent fit on the first build. ADCERAX supplier response was fast, and pricing was stable across repeat orders.
  -- Michael R., Purchasing Manager | Northfield Vacuum Systems
• ⭐️⭐️⭐️⭐️⭐️
  The machinable glass ceramic plate parts arrived protected and matched our inspection datums. ADCERAX factory supported a drawing review that reduced edge-chip risk on thin features.
  -- Sophie L., Supply Chain Lead | Helios Photonics Integration
• ⭐️⭐️⭐️⭐️⭐️
  We used machinable glass ceramic plate blanks for in-house machining and later switched to finished parts for higher throughput. Hole location and flatness matched our assembly needs.
  -- Daniel K., Mechanical Engineer | Aster Scientific Instruments
• ⭐️⭐️⭐️⭐️⭐️
  Our fixture needed an insulating plate that stayed stable near hot zones. The machinable glass ceramic plate solution reduced rework and kept alignment consistent across multiple rebuilds.
  -- Emma T., Project Engineer | Orion Thermal Fixtures