Horizontal molding machine factory teaches you how to control the quality of molding sand molding

What are the key points for quality control of molding sand? The performance of molding sand depends on its material composition and mixing conditions. Below, the horizontal molding machine manufacturer will introduce methods to control the quality of molding sand molding.

1. Controlling and stabilizing the composition of molding sand data is the fundamental task. The molding sand data mainly consists of old sand, raw sand, bentonite, additives (FS powder), and mud content, with over 95% of the components coming from old sand. Due to differences in the ratio of old sand to iron and the amount of core sand mixed, it is necessary to stop testing the effective bentonite content, effective additive content, and mud content of the molding sand in order to confirm the amount of bentonite, additive, and original sand added during sand mixing.

2. The horizontal molding machine manufacturer reminds you to pay attention to changes in the burning status of the molding sand data. The sand iron ratio varies greatly with the construction of the casting, so the burning loss of various old sand varies. Therefore, it is necessary to stop replenishing sand based on the level of sand mold burning.

3. Pay attention to the changes in wet compression strength in the sand testing report. To stabilize the performance of molding sand, it is very important to pay attention to the changes in wet compressive strength in the testing report of molding sand and adjust the amount of bentonite added to the molding sand in a timely manner.

4. Pay attention to the changes in the effective additive content in the sand testing report. The horizontal molding machine manufacturer Qiaojie timely adjusts the amount of additives added in the molding sand based on the changes in the effective additive content in the molding sand testing report, and adheres to the stability of the effective additive content in the molding sand, which is the key to stabilizing the anti sticking performance of the molding sand.

5. Pay attention to the changes in mud content in the sand testing report. The mud content in the sand of horizontal molding machines generally increases from time to time with the increase of the number of sand circulation applications. It should be noted that if the mud content in the sand suddenly decreases while the dust removal system remains unchanged, it indicates that the amount of core sand mixed in the sand system suddenly increases.

6. Pay attention to the effective bentonite content in the sand testing report. According to the changes in the effective bentonite content in the sand testing report, timely adjustment of the amount of bentonite added to the sand and adherence to the stability of the effective bentonite content in the sand are the key to stabilizing the strength index of the sand.