Home
Quality Control

Quality Control

JXMIM

Quality is the key to win

JXMIM is an ISO9001 certified factory. We strictly implement process quality control throughout the company’s entire process. We currently have more than 30 quality inspection personnel and the product yield rate can reach over 96.5%.

JXMIM

Quality process

1. Preferred Materials JXMIM strictly uses high-purity raw materials, conducts regular evaluations of suppliers, and sets good IQC standards, including random selection of samples, implementation of testing methods and standards, recording and analysis results, etc., to ensure that the selected materials The mechanical properties, chemical stability, corrosion resistance and other characteristics meet the requirements.

2. Feeding Technology

Cemented carbide powder requires a suitable binder when mixing. JXMIM fully mixes the cemented carbide powder and the binder during mixing and strictly controls the process temperature to avoid volatilization and uneven distribution of the binder. The mixed materials have good rheological properties and viscosity values after being fed.

3. Forming

The key link in the production of JXMIM cemented carbide parts. By reasonably controlling the mold temperature, feeding amount, injection pressure, holding pressure, holding time, injection speed, etc. during the injection process, we will effectively avoid injection production. The generation of blank defects.

4. Degreasing

JXMIM considers the need for degreasing during the mold design stage, and ensures that the degreasing agent can fully enter every corner of the part through reasonable mold design. We strictly control the degreasing time and temperature, use a step-by-step temperature rise method for degreasing, control the concentration and frequency of use of the degreasing agent, and conduct regular inspections of degreasing equipment and process parameters.

5. Sintering

The density of cemented carbide is high, and the product is prone to deformation due to its own gravity during liquid phase sintering. JXMIM uses appropriate support devices and selects materials with comparable shrinkage rates as support plates for larger products, while minimizing the liquid phase sintering time to achieve the ideal sintering effect.

JXMIM

Common defects and solutions

insufficient injection Insufficient injection refers to the failure of the material to fill the entire mold cavity due to factors such as insufficient pressure of the injection molding machine or poor fluidity of the injection material used, resulting in incomplete injection products.

Solution: JXMIM takes measures such as improving material fluidity or changing materials, increasing wall thickness, raising mold temperature, increasing injection pressure, and extending injection time to solve the problem of insufficient injection.

Weld marks The material is divided into several streams in the cavity during the injection process and then merged. Linear marks may appear at the merge, which are weld marks, affecting the product's appearance quality, and even mechanical strength.

Solution: JXMIM prevents weld marks by taking measures such as increasing injection pressure, accelerating injection speed, increasing material temperature and mold temperature, and appropriately reducing shunting.

Air pockets