The invention provides a manufacturing process for high strength cabin door, which is as follows: preheating the smelting furnace, placing pure aluminium ingot into the furnace, melting the pure aluminium ingot fully, then adding silicon and manganese into the liquid aluminium in turn, then completely pressing magnesium into the liquid alloy; adding the remaining alloy components into the liquid alloy, adding the refining agent into the liquid alloy; cooling the melt and blowing it into the liquid alloy. Quality agent; debugging preparation for differential pressure casting machine, preheating die; injecting high strength alloy liquid into die for differential pressure casting; homogenizing heat treatment and pre-aging treatment for door castings. The aluminium alloy component in the process of the invention is more suitable for die casting, improves the yield strength and processing performance of the alloy, and is not easy to crack during die casting; the Mg_Si cluster in the alloy is easy to become Mg_Si precipitate during coating and baking treatment, which is helpful to improve the strength of the alloy; the casting hatch door has strong thermal shrinkage ability, more compact structure and significantly improved mechanical properties.
【技术实现步骤摘要】
一种高强度舱门的制造工艺
本专利技术涉及舱门制造工艺
,尤其涉及一种高强度舱门的制造工艺。
技术介绍
舱门是大型船舶的重要零部件之一,其性能质量直接影响着船舶的实用性和安全性。舱门由于尺寸较大,壁厚相差悬殊,采用现有铸造工艺进行铸造主要存在以下缺点:铸造时金属材料的屈服强度低,压铸时易产生裂纹;金属材料力学性能、强度较低,使用一段时间或受外力冲击后易发生变形。
技术实现思路
本专利技术旨在解决现有技术的不足,而提供一种高强度舱门的制造工艺。本专利技术为实现上述目的,采用以下技术方案:一种高强度舱门的制造工艺,压铸高强度舱门用的高强度合金液的配方中各组分的质量百分比如下:硅6-7%、镁0.1-0.2%、铁0.6-0.9%、铜0.8-1.4%、锰0.1-0.3%、锌0.1-0.3%、锡0.2-0.4%,余量为铝;具体步骤如下:步骤一,将熔炼炉预热15-25min,向炉内投放纯铝锭,加热至750-800℃,熔化后的铝液恒温20-30min;使纯铝锭充分熔化,再向铝液中加入硅、锰依次熔化,随后将温度降至660-700℃,将镁完全压入合金液中;步骤二,将剩余的合金的组分加 ...
【技术保护点】
1.一种高强度舱门的制造工艺,其特征在于,压铸高强度舱门用的高强度合金液的配方中各组分的质量百分比如下:硅6‑7%、镁0.1‑0.2%、铁0.6‑0.9%、铜0.8‑1.4%、锰0.1‑0.3%、锌0.1‑0.3%、锡0.2‑0.4%,余量为铝;具体步骤如下:步骤一,将熔炼炉预热15‑25min,向炉内投放纯铝锭,加热至750‑800℃,熔化后的铝液恒温20‑30min;使纯铝锭充分熔化,再向铝液中加入硅、锰依次熔化,随后将温度降至660‑700℃,将镁完全压入合金液中;步骤二,将剩余的合金的组分加入合金液中,保温20‑30min,随后升温至800‑850℃,‑将精炼剂加入 ...
【技术特征摘要】
1.一种高强度舱门的制造工艺,其特征在于,压铸高强度舱门用的高强度合金液的配方中各组分的质量百分比如下:硅6-7%、镁0.1-0.2%、铁0.6-0.9%、铜0.8-1.4%、锰0.1-0.3%、锌0.1-0.3%、锡0.2-0.4%,余量为铝;具体步骤如下:步骤一,将熔炼炉预热15-25min,向炉内投放纯铝锭,加热至750-800℃,熔化后的铝液恒温20-30min;使纯铝锭充分熔化,再向铝液中加入硅、锰依次熔化,随后将温度降至660-700℃,将镁完全压入合金液中;步骤二,将剩余的合金的组分加入合金液中,保温20-30min,随后升温至800-850℃,-将精炼剂加入合金液中,保温30-40min;步骤三,将步骤二制得的熔融体降温至560-600℃,在熔体中通过惰性气体吹入变质剂,然后继续用惰性气体除气除渣,在进行炉前成分分析,合格后即制得高强度合金液;步骤四,对差压铸造机进行调试准备,将预热至150-200℃的升液管安装到保温炉上;同时进行预热模具,模具预热后对模具型腔喷刷涂料,然后合模;步骤五,将步骤三制得的高强度合金液注入模具进行差压铸造,制得舱门铸件;步骤六,对步骤五制得的舱门铸件依次进行均质化热处理...
【专利技术属性】
技术研发人员:于必恒,高海全,
申请(专利权)人:天津市宝洪源机械制造有限公司,
类型:发明
国别省市:天津,12
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。