Sand reclamation production line ,Resin Sand Reclamation Line , Small Resin Sand Line
The quality of resin sand equipment production line, curing agent and raw sand shall comply with the relevant provisions of the national standard, and the performance of recycled sand shall meet the technological requirements.
1. Before mixing resin sand, first turn on the power supply and air supply to check whether the sand mixing equipment operates normally and whether the raw materials are sufficient.
2, sand mixing operation process When starting and stopping the machine, the materials from the beginning to the end cannot be used as surface sand, but can be mixed into the core as filler. For larger cores, solid sand blocks can be used as fillers to enhance air permeability and save sand.
The outlet of the core can be made by pricking air holes, leaving air passages, winding nylon ventilation ropes or iron filings on the core bone, etc. For sand molds with higher sprue, refractory pipes and refractory bricks shall be used in the gating system to improve the erosion resistance of the mold. Sand molds and core boxes shall be promptly leveled and punched after being filled with sand. The molding time of resin sand depends on the specific process conditions, generally within 20~60 minutes, and the molding time of large parts such as machine body and cylinder body can be appropriately extended.
The resin sand core cannot be painted until it has been molded for one hour. For the drying process of water-based coating, please refer to the "Drying Process Code". Alcohol-based coating is used. After the coating is ignited and dried, large pieces shall be properly baked with gas to ensure thorough drying. If the resin sand type and core are damaged, the adhesive shall be applied for bonding or the nails shall be filled with resin sand for curing and then ground flat.
After the core is taken out of the mold, it shall generally take 6 hours to reach a certain strength before pouring. After each work shift, the mixing tank and blades must be cleaned. Periodically check whether the quantification of sand mixing equipment is accurate.
3, resin sand process performance inspection The performance inspection for resin type and core sand is specified as once per shift and four times per week. At normal temperature, the requirements are: one hour tensile strength ≥0.08Mpa, two hours tensile strength > >0.2 Mpa, and 24 hours tensile strength > >0.4 Mpa. The performance test of reclaimed sand shall be conducted once a week, with burning degree < 2.5%, mud content < 1.5% and gas production < <15ml.
Our company
Since its founding in 1998 as Qingdao Huaxin Group, the mission of qingdao huaxin group has been to develop the most innovative solutions possible for the automation of green sand moulding, sand core making machine, sand preparation and shot blasting processes throughout the foundry industry. Continuous technological improvement and innovation have earned nearly 20 intellectual property rights in China.
Today, with nearly 5,000 sand moulding machines and shot blasting systems installed around the world, and its sales and service operations are spread all over the world. Our single focus is, has always been, and will always be the foundry industry.
Qingdao Huaxin Group has over 20 years history In China. It is located in Binhai Industrial Park, Huangdao Area, Qingdao city,China. It is covered an area of sixty-six thousand six hundred and sixty-seven Square meters. We have produced foundry machines more than 1000 types, so we have rich experience in sand casting production machines. The casting production line is Automatic horizontal static pressure molding line, Auto shell molding line, Furan resin sand automatic molding line, Green sandl processing production line(Sand Preparation); the newest patent machine-continuous sand mixer,pouring machine, popular standard machine are Jolt squeeze molding machine, pneumatic multi-piston molding machine, all kinds of cold core / hot core box core shooting machine, various shot blasting machines. We provide excellent supporting equipment and services for China's foundry, shipbuilding, automobile, locomotive, machine tool and other industries. We design and manufacture various non-standard special casting machines according to user needs.
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