From crucible holders to insulation felt, every part of Dehong's photovoltaic thermal field range is built for the two production processes that define solar silicon manufacturing: Czochralski monocrystalline pulling and directional solidification of multicrystalline ingots.
Each component in the photovoltaic line starts from the same question: what load, temperature and purity condition does this specific position inside the furnace actually face? A decade of C/C process experience is what turns that question into a fiber layout and a densification schedule.
2D, 2.5D and 3D fiber layouts are selected by loading mode — longitudinal reinforcement for support rods under tension, radial reinforcement for crucible holders under compression, balanced layups for heaters under bending.
Heater geometry, support ring dimensions and felt placement are tuned to control the V/G ratio in CZ growth and the solidification-front shape in DSS ingots, directly affecting crystal defect density.
New furnace designs and OEM drawings go through prototype runs and dimensional verification before a component is qualified for full production, so the first production batch matches spec.
Every category on this page — from crucible holders to insulation felt — is produced end to end in-house, from fiber preform through densification, graphitization, precision machining and final inspection.
Answers to the questions solar wafer producers and furnace builders ask most often when evaluating carbon-carbon thermal field parts.
Graphite is isotropic and relatively brittle, so it erodes and cracks faster under repeated thermal cycling. C/C composite is reinforced with carbon fiber, so its fiber orientation can be engineered per component, giving it better thermal shock resistance, lower density, and a longer service life at the same operating temperature.
Service life depends on furnace cycle time, temperature profile and load, but C/C components generally retain mechanical integrity over a substantially higher number of thermal cycles than equivalent graphite parts, which reduces how often hot-zone components need to be replaced.
Yes. Furnace drawings, OEM part numbers or performance targets (temperature, load, atmosphere) can be supplied, and a matched fiber architecture, density grade and dimensional spec is returned before production tooling begins.
Ash content and metallic impurity levels are controlled through raw fiber selection, densification process control, and ICP-MS ash-content analysis on finished parts, keeping contamination risk to the melt low.
Lead time varies with component complexity and order volume — standard catalog dimensions ship faster, while fully custom geometries require prototype validation first. Specific lead times are confirmed once drawings or specifications are reviewed.
Yes. Material certificates, dimensional inspection reports and chemical analysis results can be provided as part of a documentation package on request.
