What are the sources of sand that affect cast iron platforms

The material of cast iron platform/cast iron flat plate castings is divided into common gray cast iron:HT100,HT150,HT200.

Inoculated cast iron:HT250,HT300,HT350.

A series of important cast iron alloys are a general term for alloys composed of iron,carbon,and silicon,in which the mass fraction of carbon exceeds the amount retained in the austenite solid solution at eutectic temperature.

Since there are sand particles,sand clumps,or sand blocks in the sand hole,it is requested that forging engineering personnel should,like public security personnel solving cases,find out where the sand comes from,find the origin of the sand,and find a way to control the sand hole.

How many roads can lead to the origin of cast iron platform sand?It should be said that there are six paths on the main road,which are the six origins.

The origin is that the external strength of the sand mold or sand core is low,and the sand on the mold wall or sand core cannot withstand the erosion of low-temperature metal liquid and peels off.

The origin of this is due to the unreasonable planning of the pouring and pouring system,which resulted in sand falling,flushing,squeezing,and scattered coating.

The third origin is the occurrence of sand falling,flushing,squeezing,and scattered coating in the mold cavity,which causes sand particles,such as leaving too small a gap between the core heads to form squeezing.

The fourth origin is that the pouring rate is too fast,and the impact force of the molten metal on the cast iron platform is too strong,causing sand particles to scatter from the mold wall or core.

The fifth origin is due to the carelessness of the entire box operator.For example,if the floating sand inside the lower core cannot be blown clean,perhaps the wall of the exposed air hole and the virtual sand and sharp sand inside the mold have not been cleaned up in real time,or perhaps the virtual sand and sharp sand inside the mold and the pouring riser have not been blown up,and the results may fall off again during the pouring process after the box is closed;Perhaps the handling and crushing of the box may cause vibrations and impacts,resulting in scattered sand.

The sixth origin is that after the box is closed,foreign sand falls from the exposed riser,exposed vent,or straight gate,causing trouble.

So,the six roads above are the origin of welding platform sand.Controlling sand particles,especially the origin of deadly sand masses and blocks,is the crux of dealing with sand hole problems.The sand holes formed by the scattered sand particles in Lingding are too shallow,so they will not constitute scrap of the casting.At most,the outside is not smooth.As long as the sand blocks and sand masses form sand holes,they are fatal to the casting.

The forging industry is a characteristic property of Cangzhou City,scattered in more than ten counties(cities)such as Xian County,Mengcun,and Boyou.It has a long history,a large property range,and complete products.There are over 1400 forging enterprises in the city,including 193 forging enterprises above this range.Last year,the city's casting production exceeded 2 million tons,with a business expenditure of 29.7 billion yuan.

At present,the forging industry is facing a new round of reshuffle.Low level price wars are no longer competitive for enterprises.Adapting to the structural transformation of the supply side and providing products for customers,satisfying the needs of different customers is the key to winning.Through process innovation,promoting the contemporary and green growth of the forging industry is a common goal for the growth of the forging industry.Some companies that fail to meet environmental standards and have no competitive products have been eliminated,while some companies that are early adopters and have strong innovative abilities still thrive.Some of them underwent early transformation and their skills impressed foreigners;Some are immersed in innovative discussions and produce new products domestically.