Automatic horizontal molding machine manufacturers teach you to control the quality of sand molding methods

　　What are the main points of sand quality control? The performance of sand is determined by its material composition and mixing condition, the following horizontal molding machine manufacturers for you to introduce the method of controlling the quality of sand molding.

　　1. Control and stabilization of sand material composition is the fundamental work. The sand material is mainly composed of old sand, original sand, bentonite, additives (FS powder) and mud, of which more than 95% of the components come from the old sand. Affected by the old sand, sand and iron ratio, core sand mixed into different amounts, the bentonite content of sand, additive content and mud content to stop the test, in order to determine the mixing of sand, bentonite, additives and the amount of original sand replenishment.

　　2. Horizontal molding machine manufacturers remind you to pay attention to changes in the sand material burnout. Sand-iron ratio with the casting structure of different changes, so a variety of old sand burnout amount is not the same, and therefore to stop according to the level of sand burnout sand replenishment.

　　3. Pay attention to the change of wet compression strength in the sand test report. To stabilize the performance of sand, pay attention to changes in the wet compressive strength of the sand test report, timely adjustment of the amount of bentonite in the sand is very important.

　　4. Pay attention to the change of additive content in the sand test report. Horizontal molding machine manufacturers Qiaojie based on the sand test report in the change of additive content, timely adjustment of sand additives in the amount of filler, adhere to the stability of the additive content of the sand is to stabilize the sand anti-sticking performance of the key.

　　5. Pay attention to the change of mud content in the sand test report. The mud content in the sand of horizontal molding machine is usually increased with the increase of the number of times of sand recycling. It should be noted that, under the condition that the dust removal system remains unchanged, if the mud content in the sand suddenly decreases, it will be clarified that the amount of core sand in the sand molding system is suddenly increased.

　　6. Pay attention to the bentonite content in the sand test report. According to the sand test report in the bentonite content of the changes in the sand, timely adjustment of the sand in the amount of bentonite additions, adhere to the sand in the bentonite content of the stability of the sand is to stabilize the key sand strength indicators.