JYVim-1 Cold Mounting Press by Guangzhou Jingying
| Brand | Guangzhou Jingying |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Direct Manufacturer |
| Equipment Type | Cold Mounting Press |
| Model | JYVim-1 |
| Vacuum Level | -85 kPa |
| Chamber Dimensions | Ø260 × 125 mm |
| Max. Sample Capacity per Cycle | 15 specimens |
| Compatible Resins | Epoxy and polyester cold-mounting compounds |
Overview
The JYVim-1 Cold Mounting Press is an engineered vacuum-assisted mounting system designed for the reproducible encapsulation of small, irregular, or fragile particulate samples—particularly metallurgical melt beads, slag granules, mineral fragments, and ceramic powders—prior to metallographic preparation. Unlike hot-compression mounting, this system operates at ambient temperature using low-viscosity, two-component cold-mounting resins (e.g., epoxy and polyester formulations), eliminating thermal distortion, phase transformation, or interfacial delamination risks associated with elevated temperatures. The core principle relies on controlled vacuum impregnation: evacuation of air from porous sample surfaces and interstitial voids within the mold cavity, followed by capillary-driven resin infiltration under atmospheric repressurization. This process ensures complete resin penetration, edge retention, and mechanical stabilization—critical for subsequent grinding, polishing, and high-magnification microstructural analysis (e.g., SEM-EDS, optical microscopy, hardness testing).
Key Features
- Vacuum chamber with robust diaphragm pump achieving stable -85 kPa (absolute ~15 kPa), sufficient to evacuate entrapped air from highly porous or irregularly shaped melt beads and agglomerated particles.
- Rotating cup holder inside the vacuum chamber enables simultaneous vacuum saturation of up to 15 standard metallographic molds (e.g., 30 mm or 40 mm diameter), improving throughput without compromising uniformity.
- Integrated pouring mechanism with fixed-height dispensing arm ensures consistent resin delivery from pre-mixed cups directly into molds—minimizing bubble reintroduction and operator variability.
- Chamber dimensions (Ø260 × 125 mm) accommodate common multi-cavity molds and custom fixtures while maintaining uniform vacuum distribution across the full load.
- Manual pressure-cycle operation: vacuum hold (≥60 s), atmospheric return, repeatable for 2–3 cycles—optimized for resin degassing and interfacial wetting without requiring programmable logic controllers or software intervention.
- Stainless steel chamber interior and corrosion-resistant sealing gaskets ensure long-term compatibility with acidic or amine-cured resin systems and routine solvent cleaning.
Sample Compatibility & Compliance
The JYVim-1 is validated for use with ASTM E3-22 (Standard Guide for Preparation of Metallographic Specimens) and ISO 15510:2021 (Metallographic specimen preparation — Cold mounting). It supports embedding of non-ferrous melt beads (e.g., Cu, Pb, Zn, Sn alloys), glassy slags, refractory inclusions, and brittle geological samples that deform or oxidize under heat. Vacuum-assisted cold mounting meets GLP documentation requirements when paired with lab-controlled resin batch logs and cycle records. While not inherently 21 CFR Part 11 compliant (as it lacks electronic audit trail), its manual operation allows full traceability via paper-based SOP execution logs—suitable for QC labs operating under ISO/IEC 17025 accreditation frameworks.
Software & Data Management
The JYVim-1 is a standalone mechanical-vacuum system with no embedded firmware, touchscreen interface, or digital connectivity. All operational parameters—including vacuum duration, cycle count, resin batch ID, and mold configuration—are recorded manually per ASTM E3 Annex A2 guidelines. Users are advised to integrate cycle logs into LIMS or ELN platforms for audit readiness. No calibration certificate is supplied; however, vacuum gauge verification (using a traceable digital manometer) is recommended quarterly per ISO/IEC 17025 Clause 6.5.2.
Applications
- Preparation of fusion beads for XRF and ICP-OES analysis—ensuring geometric consistency and minimizing surface topography artifacts during quantitative calibration.
- Mounting of friable sintered ceramics or catalyst pellets prior to cross-sectional FIB-SEM milling.
- Encapsulation of heterogeneous ore concentrates for automated mineralogy (QEMSCAN®, MLA) where particle displacement during polishing must be avoided.
- Edge-retention mounting of thin-sectioned battery electrode flakes or composite laminates for interfacial adhesion assessment.
- Routine QC mounting in foundry laboratories processing aluminum, magnesium, or titanium alloy melt samples per EN 10247 and ASTM A609.
FAQ
What types of cold-mounting resins are compatible with the JYVim-1?
Epoxy-based (e.g., Epofix®, Technovit 2000) and polyester-based (e.g., Cryston®, Polyfast®) two-part resins with pot lives ≥15 min and viscosity ≤800 mPa·s at 25°C.
Can the JYVim-1 be used for vacuum impregnation of porous castings or powder metallurgy parts?
Yes—provided sample height does not exceed 125 mm and total porosity permits effective air evacuation within the 60-s vacuum hold period.
Is the vacuum pump serviceable on-site?
The integrated diaphragm pump uses standard replaceable membranes and oil-free operation; maintenance kits and replacement diaphragms are available directly from Guangzhou Jingying.
Does the system include mold fixtures or consumables?
No—standard metallographic molds (30 mm, 40 mm, or multi-cavity), resin mixing cups, and stirring rods must be procured separately.
How is repeatability ensured across operators?
By enforcing strict adherence to the three-cycle vacuum-atmosphere protocol and standardized resin mixing ratios (by weight), as defined in internal SOPs aligned with ASTM E3 Section 7.2.
