In order to further improve the surface quality of castings and improve the market competitiveness, the company has decided through research that:

　　1、 After each batch of castings is unpacked, the quality inspection department shall organize the production department, casting workshop director, team leader and relevant technical personnel to carry out on-site casting grade evaluation according to the casting appearance rating standard, and post them on the workshop management board.

　　2、 The production department calculates the fixed wage of molding team based on casting grade evaluation.

　　3、 Due to the molding operation error, the difficulty of sand cleaning of the casting increased. According to the special judgment of the quality review group, the financial department subsidized the sand cleaning workshop according to 40% of the down floating wage (good poor) of the molding team, which was added to the sand cleaning worker's salary for cleaning the casting.

　　4、 Coating regulations of release agent: in principle, three pieces of large outer mold, ten pieces of core box, and ten pieces of outer mold and core box of small parts should be brushed once. Before the mould without production for a long time is put into the workshop, the outer mold core box should be repainted with release agent.

　　5、 The molding and core making requires compactness control. The molding sand should be compacted tightly, and it must be above 90 degrees when tested by sand mold hardness tester. If the cavity and mud core are damaged or the plane is uneven, they must be repaired and ground flat.

　　6、 The mixing time, type and concentration of coating were controlled. Baume degree test by the workshop sent for testing and recording, laboratory sampling.

　　7、 The coating is applied twice. The first coat is thicker and the second is thinner. After brushing, it should be smooth and clean without brush marks. If necessary, polish it with fine sandpaper. All runner, runner basin and riser must be brushed twice.

　　8、 Repair the furnace on time and remove slag repeatedly.

　　9、 Aluminum silicate board must be used for slag blocking during pouring.

　　10、 The responsibility of molding group should be implemented for returned waste products.

　　11、 For tonnage wage settlement of modeling team, a process checklist signed by inspector must be attached and supervised by finance department.