1. Inspection platform casting sand milling process control 
The performance of the sand will directly affect the quality of the casting, therefore, the sand should have good air permeability, wet strength, fluidity, plasticity and yielding properties. 
Wet type sand should use the particle size in 55/100, 75/150, 100/200 polygonal or round natural stone sand, so as to obtain a better surface strength and sand trapping resistance. When the clay content is the same, bentonite has higher hot and wet tensile strength than ordinary clay. Adding the right amount of coal dust and wood chips in the wet type clay sand can improve the sand trapping resistance and prevent sand trapping, sand sticking and get a smooth surface of the casting. The moisture of the type sand is set at about 6% to make it have better comprehensive performance. 
Strictly follow the order of adding material: old sand - new sand - clay - coal dust - water. Mixing and milling time is set at 6~7min, after mixing and milling, about 5h blending is carried out. After blending, the sand is sieved and loosened before use, so as to make the sand loose and improve the air permeability and fluidity.

2. Inspection platform casting melting process control 
When producing gray cast iron parts, the quality of human furnace and human package materials must be strictly controlled, and their composition, lumpiness and physical and chemical properties must be checked and accepted as required. 
Fertilized cast iron is a kind of gray cast iron with flaky graphite, only the manufacturing principle is different from ordinary cast iron, with the addition of the fertilization process. In the low carbon, silicon composition of the molten iron, add the right amount of inoculant to inhibit its excessive graphitization. Generally speaking, the carbon content of the original iron is between 2.8 and 3.0%, and due to the low carbon content of pregnant cast iron, a sufficient amount of scrap steel is added to the furnace charge. The content of silicon is between 0.9 and 1.5% in order to increase the amount of inoculant added to improve the mechanical properties of the casting. Sulfur, manganese content of 0.08 ~ 0.12% and 0.9 ~ 1.2% range, respectively, if the manganese content is too high, the cast iron carburized body. The phosphorus content is less than 0.12%, if its content is high, it will affect the strength of the casting. 

3. Inspection platform casting molding process control 
Molding process control is the key process of generating castings, which directly affects the quality of castings. Main attention to the following aspects. 
3.1 mold sample: mold sample is the main process equipment for casting production, but also the first process of casting production, in order to ensure the geometric size at the same time. Also consider the scale of production and ease of use. In the production process, the first thing to consider is its process structure and performance. On the one hand to improve productivity, on the other hand to ensure quality. In the process of use to check the integrity of the mold sample, to ensure the use of defect-free. If there are defects, they should be repaired before use. When starting the mold, we should pay attention to the knocking strength, and the aluminum mold should be padded with wooden blocks for knocking to reduce the degree of damage of the aluminum mold. 
3.2 Reasonable process: The operator should operate strictly according to the process, and the structure of the casting should be simple and convenient, so that the number of parting surfaces is small, the slope of the mold should be drawn, the number of sand cores should be small, the wall thickness should be reasonable, and there should be a transition at the connection. Choose a reasonable pouring system, so that the casting sequence solidification, in order to get a uniform organization of the casting. 
3.3 close box: close box is an important link that can not be ignored, the casting surface of the floating sand to clean up, according to the seal to close, pay attention to the amount of wrong box, is an important means to reduce the casting deviation box. 
3.4 Lower core: The lower core should be smooth and clean up the floating sand. The position of the sand core should be placed well to prevent the generation of deviated cores. 
3.5 Drying: For the drying process of dry mold molding, the operation should be carried out according to the operation procedures, and the drying time should be more than 8h to prevent defects such as sand and porosity caused by impermeable drying. 

4. Inspection platform casting pouring process control 
Through the above link of preparation, it can be poured. Before pouring, the casting water should be breeding and slag picking process. During the pouring process, it is necessary to keep flowing and smoothly to avoid the formation of sand eyes by washing sand. When running fire, the part of leaking casting water should be blocked in time, and the casting water should be replenished to reduce the defects such as cold separation and insufficient pouring.

5. Inspection of cast iron plate casting cleaning process control 
The cleaning process is to clean up the casting from the molds after the casting has cooled down, in order to obtain the castings without defects on the surface. 
5.1 sand: castings must be fully cooled to pick out of the casting, generally requires no less than 3 h. If the time is too short, the surface will occur to make the hardness of high cutting difficulties caused by excitation cooling. Castings larger may produce thermal cracking, castings, internal stress is larger, easy to cause deformation and affect the size of the casting. 
5.2 sand cleaning: to obtain a good surface finish of the casting, small live parts can be removed by cleaning the surface of the sand roller. Large live parts are shot blasted to remove the sand on the surface. Non-processed surface of the sticky sand must be cleaned up to prevent the bearing chamber after dislodging when loaded into the finished product in motion, causing adverse effects on the use of bearings. 
5.3 Aging treatment: general castings are subject to aging treatment to reduce the internal stress of the casting to obtain good performance. 
5.4 inspection process control: through the inspection, feedback casting defects, find and analyze the causes, timely measures to reduce the generation of casting defects. 
Through the above link control, so that the castings become qualified products, requiring each process with each other, mutual coordination, only focus on details to better control and improve the quality of each process, in order to ensure the quality of castings.

Qingdao Sanzhuji Equipment Manufacturing Co., Ltd. specializes in the production of sand reclamation equipment,foundry machines,Sand casting equipment,GS high efficiency rotary mixer,no-bake resin sand mixer,Jolt squeeze molding machine/Jolt-squeezing moulding machines,Multi- Piston Moulding Machine/Hydraulic multi-piston moulding machine,foundry molding machine,flaskless moulding machine,shot blasting machine,dust collector,according to the amount of old sand recovered Carry out plan customization, and provide sand reclamation equipment installation, commissioning, and training. Welcome guests to visit the factory.