Mixer mould

For industrial-grade mixer moulds, you should prioritize high-grade tool steels such as P20, 718H, or H13. These materials offer excellent wear resistance and thermal stability. If the mixer components involve corrosive materials, ensure the mould uses stainless steel (e.g., S136) with a hardness rating of HRC 48-52 after heat treatment to ensure a long mould life (typically 300,000 to 1,000,000 shots).

You must provide the supplier with your machine's clamping force, tie-bar spacing, and injection volume. Request the supplier to design the mould with standardized components (like LKM or HASCO) to ensure easy maintenance. Additionally, confirm the cooling system design and ejection method (hydraulic or mechanical) to match your production line's cycle time requirements.

If the mixer is for food processing, the mould must be designed to produce parts that meet FDA or LFGB standards. Ensure the supplier provides material traceability reports and uses non-toxic, food-safe lubricants. For electrical mixers, the housing moulds must account for UL94-V0 flame retardancy requirements in the final plastic part design.

Demand a DFM (Design for Manufacturing) report before production starts to identify potential thin walls or air traps. During production, request weekly progress photos and a T1 sample testing report. The final inspection should include a Full Dimensional Inspection Report using CMM (Coordinate Measuring Machine) to ensure tolerances are within ±0.01mm to ±0.05mm.

Before sharing any 3D files or blueprints, sign a Non-Disclosure Agreement (NDA) that is enforceable under the supplier's local jurisdiction. Consider splitting the mould production (e.g., core and cavity) between different shops if the design is highly sensitive, or work with verified 'Diamond Members' on Made-in-China.com who have a proven track record of professional integrity.

The industry standard for mould procurement is a 40-30-30 payment structure: 40% deposit, 30% after T1 sample approval, and 30% before shipment. Negotiate for a mould life guarantee in the contract; if the mould fails before the agreed number of cycles, the supplier should be responsible for free repairs or replacement.

Moulds are susceptible to rust during sea transit. Insist that the supplier applies anti-rust oil, wraps the mould in vacuum-sealed plastic, and secures it in a fumigated wooden crate. Ensure the mould identification plate and operation manual are attached, and request sea freight insurance to cover potential damage during handling.

Utilize the Audit Reports available on Made-in-China.com, which are conducted by third-party agencies like SGS or Bureau Veritas. Look for suppliers with ISO 9001:2015 certification and ask for a video factory tour to inspect their CNC centers, EDM machines, and assembly workshops to ensure they are a manufacturer and not a middleman.