Strong Chemical Stability Custom Carbon Eccentric Hole Graphite Crucible for Gold Silver Melting

Name: Strong Chemical Stability Custom Carbon Eccentric Hole Graphite Crucible for Gold Silver Melting
Brand: Jiangxi Ningheda New Material Co., Ltd.
SKU: 857114375

Jiangxi, ChinaJiangxi Ningheda New Material Co., Ltd.

US$5.00-100.00

1 Piece

Sample price:US$10.00/piece.Request sample

Product profile

Customization

Available

Feature

Corrosion Resistance, High-Thermal Conductivity, Thermal Shock Resistance

Type

Graphite Product

Model NO.

MSL85

Product Name

Graphite Product for Copper Ironl Metal Melting

Name

Graphite Product

Carbon Content

High-Carbon

Grade

Forming Way

Molded Graphite

Composition

Graphite

Crystal Morphology

Artificial Graphite

Transport Package

Wooden Box

Specification

Customization

Trademark

Ningheda

Origin

China

HS Code

3801909000

Production Capacity

9000000

Key features

Eccentric-Hole Design: Spiral filling path reduces porosity from 12% to under 2% and increases casting density by over 30%.

Energy Efficiency: Smelting 1kg gold takes 8-12 minutes, reducing time by 40% and saving over 25% electricity.

Long Service Life: Average life of 80-120 cycles, 2-3 times longer than clay-graphite crucibles, reducing daily cost by 60%.

Company profile

Importers and ExportersHigh Repeat Buyers Choice

Jiangxi Ningheda New Material Co., Ltd.

Jiangxi, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 8 Years CertifiedNearest Port: Tianjin Port, Qingdao Port, Shanghai PortAverage Response Time: ≤9.79h

AI-Powered supplier vetting

SummaryJiangxi Ningheda New Material Co., Ltd. is a limited company with 126 employees specializing in the research, development, production, and sale of special graphite products. It provides OEM services for well-known brands and ODM services, with customization available from samples, designs, full specifications, and minor modifications. Its service system includes documented procedures and records for supplier assessment, corrective and preventive actions, and customer complaints. Production-related evidence includes random finished-product inspection, three quality inspectors, specified processing and measurement equipment, and documented inspection instructions. However, the supplier reports no new products in the past year, no available SDK, no overseas warehouse, showroom, agent, or branch, and no participation in offline trade shows. Financial credibility, certification holding, and customer cases cannot be determined from the provided information.

Supplier typeThe supplier is identified as Jiangxi Ningheda New Material Co., Ltd., a limited company with 126 employees and no stated affiliation with a larger company group. Its stated specialization is the research, development, production, and sale of special graphite, and its offered product scope is graphite products.

After-Sales capabilityThe supplier has documented and followed procedures for customer complaints, corrective and preventive actions, and service-capability assessment. However, it has no overseas warehouse, showroom, agent, or branch, and reports zero countries where overseas services are offered; this supports procedural complaint handling but not broad overseas service coverage.

R&D capabilityThe supplier states that it conducts research and development and provides ODM services, but also reports no new products during the past year and no available SDK. The evidence confirms R&D-related service availability but shows a stated recent-product-development limitation.

Production capacityThe supplier specializes in producing special graphite and reports a combined facility including cutting, profile-processing, CNC, and caliper equipment. It also has three quality assurance and quality control inspectors, documented inspection instructions, and random finished-product inspection, supporting established production and inspection operations.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, and minor customization. These options are stated consistently in both the R&D/design-service and quality-control information.

Client casesThe supplier states that it provides OEM services for well-known brands, which is evidence of brand-customer service experience. No customer names, project descriptions, product examples, or verifiable case details are provided, so the depth and relevance of customer cases cannot be fully assessed.

Product Q&A

Q:What is the difference between a graphite crucible with an eccentric hole and a standard crucible with a central hole?

Conventional crucibles have a centrally located hole, which makes it easy for precious metals to remain at the bottom of the crucible after the molten metal is poured out, resulting in raw material loss. The offset hole design guides the molten metal to gather on one side, allowing for more thorough discharge and reducing precious metal residue. At the same time, the structural dimensions can be matched to the discharge interfaces of automated casting equipment, making them suitable for assembly

Q:Can the position and size of the eccentric hole be modified to fit my equipment?

We support full customization. We can adjust the eccentric distance and the inner diameter of the flow channel based on the location of your casting equipment's discharge port, while also adjusting the overall height and outer diameter of the crucible. We will provide CAD drawings for your confirmation before production.

Q:Will the crucibles break during shipping?

Although graphite is hard and brittle, our packaging has passed drop tests. Each piece features independent cushioning supports at the eccentric hole locations, and the breakage rate during normal logistics transport is less than 0.5%. If you receive a damaged item, please take photos and contact us within 24 hours for a replacement.

Q:Besides precious metals, can common metals like copper and aluminum be smelted in these crucibles?

Yes, but it is not recommended. Copper and aluminum have low melting points, so using standard clay-graphite crucibles is more cost-effective. High-purity isostatic graphite crucibles are more expensive, and their purity advantages are best utilized when processing precious metals.

Q:Can this crucible be used at high temperatures in the open air for extended periods?

We do not recommend prolonged use at high temperatures in an open environment. Graphite oxidizes slowly in a high-temperature, oxygen-rich environment. We strongly recommend using it under a vacuum or an inert protective atmosphere (such as nitrogen or argon), which not only extends the crucible's service life but also prevents the oxidation of precious metals.