STMC Breaks the Burr Removal Bottleneck of Injection-Molded Parts in Nanjing, Delivering Ultra-High Precision & High-Efficiency Alternative to Traditional Deflashing
Relying on the technological advantages of Sino-Japanese joint low-temperature R&D, STMC (Nanjing Zhaoling Precision Machinery) independently developed the Jishe series fully automatic liquid nitrogen cryogenic deflashing machines, delivering an integrated flash and burr removal solution for all types of injection-molded components. Featuring micron-level precision and dozens of times higher production efficiency, the equipment completely replaces inefficient traditional deflashing methods including manual trimming, cutter grinding and manual sandblasting. It empowers manufacturers of automotive parts, 3C electronics, precision instruments and new energy plastic components to upgrade their surface treatment workflows to full automation.
During injection molding, micro flashes and burrs tend to form on parting lines, deep holes, undercuts and thin-wall gaps of engineering plastics such as PA, PPS, PC, POM, TPU and ABS. Traditional deflashing processes suffer from long-standing industrial pain points:
1. Manual trimming can only remove visible surface burrs, leaving residues hidden in inner cavities and narrow dead corners untouched;
2. Cutter grinding easily scratches workpieces and causes edge chipping or deformation, leading to extremely high defective rates;
3. Manual throughput is limited, requiring dozens of workers for mass orders and driving up costs for labor, quality inspection and management;
4. Deflashing quality varies drastically depending on workers’ skill levels, resulting in inconsistent batch quality that fails to meet the tolerance standards of high-end precision plastic parts.
To address these industrial bottlenecks, STMC has dedicated over two decades to the research of liquid nitrogen cryogenic embrittlement technology. Its self-developed Jishe cryogenic deflashing machines achieve leaps in process performance, operating on the core principle of ultra-low temperature refrigeration with liquid nitrogen: The internal chamber maintains a stable temperature range of -50°C to -100°C. Thin, tiny flashes and burrs on injection-molded parts rapidly turn brittle, while the thick workpiece body retains its original toughness. High-speed controllable blasting media evenly impacts the components, instantly shattering and stripping off brittle flashes without damaging the plastic substrate, altering product dimensions or compromising material properties. All hidden internal parting lines can be eliminated in a single processing cycle.
I. Ultra-High Precision, Zero Defects for Precision Plastic Components
The deflashing precision of STMC Jishe machines reaches 0.01mm at the micron level, capable of removing micro burrs invisible to the naked eye on deep grooves, inner holes, complex curved surfaces and multi-latch special-shaped injection-molded parts. Compared with traditional processes, defective rates caused by workpiece scratches, edge chipping and dimensional out-of-tolerance are reduced by over 90%. All products are processed with standardized fixed parameters free of manual operation errors, maintaining a stable finished product yield above 99%. The equipment fully complies with strict manufacturing standards for precision connectors, automotive structural parts, medical plastic accessories and other high-spec components.
II. Exceptional Efficiency: A Single Machine Replaces Dozens of Deflashing Workers
The machine supports integrated mass batch processing, with hundreds of plastic parts loaded per cycle and a full deflashing cycle lasting only several minutes. The 8-hour throughput of one unit equals that of 40 to 80 skilled manual deflashing workers, enabling stable 24-hour non-stop operation and drastically shortening order delivery cycles. Equipped with an intelligent PLC touch control system preloaded with over a thousand process formulas for plastic materials, users can switch material grades and product models with one-click parameter retrieval without repeated debugging. Only one operator is required to complete loading and unloading, drastically cutting labor headcount and workshop personnel management costs. The whole machine occupies merely over ten square meters, making it suitable for small and medium-sized injection molding factories and automated production line retrofits.
III. Comprehensive Replacement for Traditional Deflashing with Multi-Core Advantages to Empower Production
1. Full coverage without dead corners Internal undercuts, tiny holes and slit burrs inaccessible to manual labor and cutting tools can be thoroughly cleaned in one run, eliminating the need for secondary rework.
2. Eco-friendly physical processing Burr removal relies purely on low-temperature physical treatment, with no chemical solvents or dust pollution. The fully enclosed processing chamber ensures safe and compliant operation, and waste consists solely of crushed flash debris for centralized recycling.
3. Compatible with all mainstream injection molding materials Applicable to most hard and soft engineering plastics including nylon, PPS, PC, POM, polyurethane, elastomers and ABS. Custom temperature control and blasting parameters can be configured for different materials.
4. Lower long-term overall costs Labor, inspection and rework loss expenses are greatly reduced, alongside minimized mold wear. The unit processing cost for deflashing is far lower than the traditional manual model.
As a Jiangsu Provincial Specialized, Refined, Unique & Innovative Enterprise, STMC holds multiple independent patents for low-temperature deflashing technology. Its equipment has obtained ISO9001 and CE certifications, with a complete nationwide service network. We provide a full-chain supporting service portfolio including free sample cryogenic deflashing testing, custom fixture development, on-site installation & commissioning, operator training and 24-hour responsive technical after-sales support. Our machines have been supplied in bulk to thousands of domestic injection molding and rubber & plastic manufacturers, and exported to Southeast Asia, Japan, South Korea and other overseas markets.
Against the backdrop of rising demand for quality improvement and cost reduction across precision manufacturing, traditional manual deflashing can no longer adapt to the trend of automated and standardized production. STMC’s liquid nitrogen cryogenic deflashing technology delivers a brand-new automated deburring solution with the core strengths of ultra-high precision, outstanding efficiency and low comprehensive costs. It drives intelligent upgrading for post-processing procedures in the injection molding industry, helping manufacturers boost product competitiveness and capture market share in high-end precision component sectors.
To accommodate injection-molded parts of different production capacities and dimensions, STMC offers customizable Jishe cryogenic deflashing machine models including 60T, 120T and dual blasting wheel variants, delivering a one-stop solution to resolve all flash removal pain points for injection-molded components.
Post time: Jun-24-2026
