product news/產品新聞
floor so it would fill horizontally. Te lower half of the casting would pass X-ray inspection, but the top half wouldn’t. Howell’s solution was to reposition the mold so it was standing up and use a vertical pouring method proprietary to AlumAlloy. “Our system takes advantage of the symmetry of the casting
and can keep bubbles from forming in the mold cavity,” he said. “It’s what we call modulated vertical pouring, because we can control the speed of the metal during pouring.” With a single large core in the 6-ft. tall nobake mold, the
castings require minimal machining. Additionally, the 210-lb. practice torpedoes, cast in aluminum alloy A356-T6, represent a significant savings compared to the cost to machine the cylin- ders from solid billet. Since delivering those first acceptable samples, AlumAlloy
has continued to produce more than 100 parts per year. Te company regularly uses its modulated vertical pouring process for a large majority of its nobake castings, including motor hous- ings as large as 1,000 lbs. (454kg). “Te applications for castings are endless,” Howell said. “Te
challenge is for engineers and buyers to see the possibilities— and we have a passion for meeting those challenges.”
重新定位砂型，这样砂型将直立，使用专利的垂直浇 注铝合金方法。
“我们的系统利用了铸件的对称型并能保证模具型 腔中的气体在成型过程中排出”，他说：“我们称之 为调整式垂直浇注系统，因为在浇注过程中我们可以 控制金属液速度”。
在高达1.8米的自硬砂型内放置1个巨大的砂芯，铸 件机加工余量很小。此外，采用A356合金、T6热处 理工艺加工95.3千克的练习用鱼雷机体铸件，与固体 坯料直接加工圆柱体的工艺比较，成本大大节约。 在交付首批合格样品后，AlumAlloy公司继续生产 每年超过100件产品。该公司经常采用其调整式垂直 浇注工艺生产大型的自硬砂铸件，包括重达454千克 的发动机外罩铸件。
“铸件的应用是无止境的”，Howell说：“挑战 是——工程师和买家要看到这些可能性，同时我们能
应对所有那些挑战”。
Since delivering those first acceptable samples, AlumAlloy has continued to produce more than 100 parts per year.
在交付首批合格样品后，AlumAlloy公 司继续生产每年超过100件产品。
June 2014
FOUNDRY-PLANET.COM | MODERN CASTING | CHINA FOUNDRY ASSOCIATION | 69
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81