Conventional standard K/J button, spring ring and thread thermocouples can meet the production needs of most packaging, household appliances and conventional auto parts molds. For special hot runner molds such as ultra-micro multi-cavity medical molds, large automotive integrated molds, anti-corrosion corrosive plastic molds and ultra-high temperature PEEK processing molds, standardized sensors cannot adapt to special installation space, temperature environment and raw material corrosion conditions. Professional thermocouple manufacturers can provide targeted personalized customization schemes according to mold drawings, processing raw materials and production requirements.
Ultra-miniature micro thermocouple customization for micro multi-cavity medical molds. Medical molds such as micro needle tubes and implant accessories often have dozens or even hundreds of tiny cavities, and the reserved temperature measuring holes of the manifold and nozzle are extremely narrow. Conventional 1.0mm probes cannot be installed, and manufacturers can customize exposed tip thermocouples with a sheath diameter of 0.6-0.8mm. The ultra-thin alloy wire design saves installation space, adopts ungrounded anti-interference structure, and the measuring tip is polished without burrs to prevent metal particles from falling into medical-grade melt. The wire can be customized with ultra-soft bending-resistant mineral insulated sheath, which is convenient for wiring in the compact narrow gap of multi-cavity molds.
Ultra-long deep-hole probe customization for large automobile integrated hot runner manifolds. Large instrument panels, bumper and door panel integrated manifolds have long internal flow channels, and there are deep blind holes for temperature measurement at the front, middle and rear of the splitter plate. Standard short probes cannot reach the effective measuring position, and manufacturers can customize mineral insulated probes with a length of 100mm to 500mm. The Inconel anti-oxidation sheath is used to adapt to the long-term high-temperature environment of large manifolds, and multiple measuring points can be designed on a single probe to realize simultaneous temperature monitoring of multiple positions of the long runner channel, balancing the temperature difference between the inlet and outlet of the manifold.
Anti-corrosion coated thermocouple customization for corrosive plastic processing molds. PVC, halogen-containing flame retardant ABS and recycled sulfur-containing plastic raw materials will volatilize corrosive gas at high temperature, which will corrode the alloy measuring junction of conventional thermocouples in a short time, resulting in signal drift and failure. The customization scheme coats a layer of high-temperature resistant anti-corrosion alloy film on the surface of the measuring junction, which isolates the contact between corrosive gas and thermoelectric alloy wire, and can extend the service life by more than 3 times under the same production conditions. For high-corrosion long-cycle production lines, full-sheath anti-corrosion coating treatment can be selected.
Ultra-high temperature special thermocouple customization for high-performance engineering plastic molds. Molds processing PEEK, LCP and high-temperature PPS need to work at a stable temperature above 400℃ for a long time. Conventional K-type stainless steel sheath thermocouples are easy to oxidize and crack, and customized all-Inconel 600 sheath thermocouples are matched, with high-purity chromium-nickel alloy wires, which can stably resist continuous high temperature of 450℃ without oxidation failure. The measuring junction adopts thickened full welding process to improve structural stability under long-term high-temperature thermal expansion and contraction.
Special bent and special interface thermocouple customization for limited space molds. Some compact thin-wall electronic molds and stacked molds have no straight wiring space between the manifold and the mold plate, and can customize multi-angle bent elbow thermocouples such as 45°, 90° and 135°, and the bending radian is pre-processed in the factory to avoid forced bending on site damaging the internal alloy wire. For hot runner systems of niche brands with non-standard M2.5, M5 thread interfaces, manufacturers can customize special thread measuring probes to realize seamless matching without secondary processing of mold threaded holes.
In addition to structural customization, manufacturers can also provide personalized configuration of precision grade, wire length, connector type and cold junction compensation module according to customer demand, and provide mold installation guidance and parameter matching suggestions to ensure that customized thermocouples give full play to stable temperature control performance in special hot runner molds.
