a淀粉的性能特點(diǎn) THE PERFORMANCE CHARACTERISTICS OF A-STARCH INCLUDE
能夠提高型砂的熱濕拉強(qiáng)度增加型砂韌性和鑄件模型表面光潔度、型砂表面的a淀粉受熱 燃燒后產(chǎn)生空隙,可以緩沖硅砂受熱膨脹。從而大大提高型砂的抗夾砂能力。
The addition of a-starch to foundry sand can enhance its thermal-wet tensile strength, increase sand toughness,and improve the surface finish of casting molds.When heated, the a-starch on the sand surface combusts and forms voids,which can buffer the expansion of silica sand.This significantly enhances the sand's anti-sand-sticking ability.
● 能夠降低型砂與模樣之間的磨擦阻力,提高型砂的起模性,減少由于起模不良而出現(xiàn)的 型廢率有效的減少了鑄件出現(xiàn)的缺陷問題。
The addition of a-starch to foundry sand can reduce friction between the sand and the pattern,enhancing sand mold release and reducing the rate of sand waste due to poor release.This effectively minimizes defects in castings.
先進(jìn)的加工工藝(晶體膨脹熱熔)
● 如果濕砂型在合型以前放置一段時間,型砂表面失水而致表面強(qiáng)度下降和容易磨損,
澆注金屬液時易被沖蝕。放置時間較長或者天氣較干燥時,問題更為嚴(yán)重。型砂中加入龍祥 a淀粉可以提高型砂的抗風(fēng)干能力,減少鑄件沖砂缺陷。
If green sand molds are left standing before closing the mold,the surface of the sand may
lose moisture,resulting in reduced surface strength and increased wear.During metal pouring, hese weakened areas are prone to erosion.This issue is more severe with longer standing times or in dry conditions.Adding Longxiang a-starch to the foundry sand can enhance its resistance to drying and reduce the occurrence of sand-washing defects in castings.
●a 淀粉的物理指標(biāo) The physical properties of A-starch are as follows 水分小于8%,水溶性大于90%,灰份小于0.5%,粒度(100目通過率)大于95%
執(zhí)行技術(shù)標(biāo)準(zhǔn) Technical standards compliance.
上一條:Efficient 煤粉 | 下一條:會員證書 |