Laser Quenching equipment
Perform phase transformation hardening treatment on the metal surface to improve the hardness, wear ...
Perform phase transformation hardening treatment on the metal surface to improve the hardness, wear ...
Used for surface strengthening, repair, and remanufacturing of components, the coating has high adhe...
Flexible processing of complex curved sheet metal parts, with high cutting accuracy, fast speed, and...
Specially designed for seamless welding of precision plastic components, with a small heat affected ...
Food extruder screw is the key component of food processing (such as grain expanding and snack food production), which directly contacts food raw materials. Therefore, it has strict requirements on surface hygiene, non-toxic and wear resistance, and must comply with GB 4806 food safety standards. In the process of grain extrusion, the screw shall bear high temperature, high pressure and strong wear of grain particles, which will easily cause surface wear and corrosion, resulting in residual food raw materials and metal impurities precipitation, affecting food safety; At the same time, the worn screw will reduce the extrusion efficiency and affect the taste and shape of the product. Most of the traditional food extruder screws are made of ordinary stainless steel, with limited wear resistance and short service life; It is difficult to ensure the hygiene of the coating by ordinary repair process, and cannot meet the food production requirements. Based on the special requirements of food extruder screw, Dow Laser Cladding Equipment adopts the food grade alloy coating cladding scheme complying with GB 4806 standard. The coating has no heavy metal precipitation, no toxicity and can directly contact food raw materials.
High-precision cladding process is adopted for the equipment to ensure that the coating surface is smooth and clean, free of pores and burrs, easy to clean and disinfect, and effectively avoid the problem of food raw material residue and cross contamination. At the same time, the coating has excellent abrasion resistance and hardness of HRC55-58, which can effectively resist the abrasion of grain particles. The corn extruder screw of a food machinery plant was obviously worn after 8000 times of use, and the residual food raw materials were serious and difficult to clean. With the treatment of Dow laser cladding equipment, the service life of the screw is extended to 22000 mode times, and the cleaning time is reduced by 40%, which fully meets the high frequency use requirements of food scale production. The cladding cost of a single screw is only 35% of the cost of replacing a new food-grade stainless steel screw, and the annual cost of spare parts saved for enterprises is over 80000 yuan. At the same time, the screw extrusion efficiency after cladding is stable, the taste of the produced corn puffed food is more uniform, and the product qualification rate is increased by 3%, further improving the market competitiveness of the enterprise.
