TianYuan TYCD-Cr12MoV Automatic Ejecting Die Cutter for Rubber & Plastic Sample Preparation

Overview

The TianYuan TYCD-Cr12MoV Automatic Ejecting Die Cutter is a precision-engineered sample preparation tool designed specifically for standardized specimen cutting in rubber, thermoplastic elastomer, and vulcanized polymer testing laboratories. It operates on a mechanical ejection principle integrated into the die structure—when used with lever-actuated or pneumatic punch presses (e.g., ASTM D3767, ISO 37, GB/T 528 compliant systems), the die blade completes the cut while simultaneously actuating an internal spring-loaded or cam-driven ejection pin. This eliminates manual extraction of specimens from the die cavity—a common source of operator-induced deformation, edge damage, or dimensional inconsistency in dumbbell, ring, or strip test pieces. The core functional requirement addressed is repeatability: consistent specimen geometry, clean shear edges, and zero residual adhesion between specimen and die surface—critical for tensile, tear, hardness, and compression set measurements.

Key Features

• Tool steel substrate: AISI D2-equivalent Cr12MoV cold-work die steel (HRC 58–62 after quenching & double tempering), offering superior hardenability, wear resistance, and dimensional stability compared to standard Cr12.
• Integrated automatic ejection mechanism: Precision-ground ejector pin assembly with hardened guide bushing ensures repeatable 1.2–1.8 mm stroke depth and ≤0.03 mm lateral runout across 100,000+ cycles.
• Micron-level dimensional fidelity: Final grinding and lapping performed post-heat treatment to maintain ±0.015 mm tolerance on critical cutting-edge profiles (e.g., ASTM D412 Type I/II, ISO 37 Type 1/2).
• Modular mounting interface: Standardized shank geometry compatible with TianYuan TP-series lever presses and third-party pneumatic units (ISO 8015-compliant mounting holes; M6 threaded inserts).
• Surface finish optimization: Cutting edge polished to Ra ≤0.2 µm; non-cutting surfaces coated with TiN (PVD) for corrosion resistance during solvent-based sample handling.

Sample Compatibility & Compliance

The TYCD-Cr12MoV die cutter supports specimen geometries defined in major international material testing standards, including but not limited to ASTM D412 (tensile), ASTM D624 (tear), ISO 37 (tensile), ISO 34-1 (tear), and GB/T 528/529/531. It accommodates sheet materials ranging from 0.5 mm to 6.0 mm thickness—rubber compounds (NR, SBR, EPDM), TPEs (TPU, TPE-S), silicone elastomers, and crosslinked polyolefins. All dimensional specifications adhere to ISO 2768-mK general tolerances. The die’s mechanical ejection function satisfies GLP requirements for operator-independent sample handling, reducing inter-operator variability in QA/QC workflows. No electrical or pneumatic auxiliary components are required—fully passive operation ensures intrinsic safety in solvent-rich environments.

Software & Data Management

As a purely mechanical sample preparation component, the TYCD-Cr12MoV does not incorporate embedded electronics, firmware, or data logging capabilities. Its integration into traceable laboratory workflows relies on external documentation: each unit is supplied with a Certificate of Conformance (CoC) listing heat treatment batch number, Rockwell hardness verification report (per ASTM E18), and dimensional inspection record (CMM traceable to NIM China). Laboratories operating under FDA 21 CFR Part 11 or ISO/IEC 17025 may assign unique asset IDs and log usage cycles in LIMS via manual entry or barcode-scanned maintenance logs. Calibration is not applicable; however, periodic verification of ejection stroke and edge sharpness (using optical profilometry per ISO 25178) is recommended every 5,000 cycles or quarterly—whichever occurs first.

Applications

• Preparation of tensile test specimens (dumbbell, ring, and strip forms) for modulus, elongation at break, and stress relaxation analysis.
• Cutting of tear propagation specimens (Trouser, Angle, Crescent) where edge integrity directly affects crack initiation energy.
• Generation of compression set discs (ASTM D395) and hardness test pads (ASTM D2240) requiring flatness <0.02 mm and parallelism <0.01 mm.
• High-volume QC labs processing >200 specimens/day—ejection reliability reduces average specimen handling time by 3.2 seconds per cut versus manual extraction.
• R&D settings evaluating novel elastomer formulations where microstructural sensitivity demands zero-tooling-induced strain localization.

FAQ

Is this die cutter compatible with non-TianYuan press systems?
Yes—provided the press features ISO-standard die mounting interfaces (center hole Ø12.7 mm ±0.02 mm, four M6 mounting holes on 60 mm square pitch) and delivers ≥15 kN nominal punching force.
What maintenance is required to sustain ejection performance?
Clean ejection pin channel with lint-free cloth and isopropyl alcohol after every 500 cuts; apply light mineral oil (ISO VG 10) to pin surface monthly; inspect for burrs on cutting edge biweekly using 10× magnification.
Can custom geometries be manufactured?
Yes—TianYuan offers OEM die design services for non-standard shapes (e.g., ISO 18894 fatigue coupons, ASTM D638 Type V), subject to minimum order quantity of 5 units and 4-week lead time.
Does the Cr12MoV material meet RoHS or REACH requirements?
Yes—material certification confirms compliance with EU Directive 2011/65/EU (RoHS 2) and Regulation (EC) No. 1907/2006 (REACH SVHC list), with full substance declaration available upon request.
Is dimensional verification data provided with shipment?
Yes—each unit includes a signed dimensional inspection report covering 12 critical features (including cutting-edge radius, ejection pin protrusion, and shank concentricity), measured on a Zeiss CONTURA G2 CMM calibrated to DKD/DAkkS standards.