Graduation Gift | 技艺双馨的戒指，赠继续成长的你

聚是一团火，散是满天星，在这个注定难忘的夏天，广东以色列理工学院迎来了首届本科毕业生。与传统的纪念册、环保袋不同，学校为“广以一期”准备了一份特殊的毕业礼物——一枚兼具设计感和科技风的戒指。采用3D打印技术制成，内圈刻着毕业生学号，每一枚都是与众不同的存在。

这枚独一无二的戒指是如何诞生的呢？下面就跟随小编的脚步，一起来看看。

缘起：寻找广以的毕业礼物

本学期初，学校开始着手准备首届学生的毕业典礼，给同学们赠送的毕业礼品是议题之一。经过多次讨论，大家对毕业礼品形成了一些共识：

（1）它是展示广以形象的毕业礼品，应该打上广以烙印；

（2）它是理工科大学的的毕业礼品，必须包含科技元素；

（3）它是中以合作大学的毕业礼品，最好采用中以合作的技术制作而成；

（4）它是赠与学生的礼品，最好有学生的参与，得到学生的认同。

在认真比较之后，学校最终选定了毕业戒指的方案。

雏形：汕头大学长江工业设计中心

这里，是李昊宇老师的办公室，也是戒指雏形诞生的地方。李老师向我们展示了戒指的设计草图，并详细介绍了背后的设计原理。

戒指形状的设计灵感来源于“菲波那契螺旋线螺旋线”，即根据斐波那契数列画出来的螺旋曲线，其中蕴含着深刻的数理原理。GTIIT五个字母从一个点出发，螺旋上升，不断拉伸旋转，弧度由小变大，延伸出一个“GTIIT”状的切面。这个上升的过程，象征着GTIIT成长的过程，强调过程的可视性。

设计草图

“将GTIIT发展过程具象化的设计迎合了当代互联网思维，即从读取文字到读取符号。“李老师介绍道。这枚戒指选用不锈钢材质，也经过了一番设计与思考，因为“和其他金属相比，钢铁更具有科技感和未来感，更符合GTIIT专注理工、不断追求创新发展的定位。”

设计是一个不断修改提升的过程，而从设计图走向最终的成品，更需要不断的试错与调整。

成品：汕头瑞祥模具3D打印实验室

走进实验室，首先映入眼帘的是一人多高的3D打印设备。“这个设备每次可以打印54枚戒指，耗时45小时，每一枚戒指都可以实现尺寸的个性化定制。” 汕头市瑞祥模具有限公司执行董事张秋娟向我们介绍。

瑞祥模具3D打印实验室于2017年，因与以色列航空工业公司（IAI）的合作而成立，一直以来采用3D打印技术进行IAI航空器零部件的制造研发。这次，这些研发设备和研发人员“大材小用”，打印GTIIT的毕业戒指。

（3D打印戒指）

与传统铸造方式相比，3D打印省去了铸模成本和试模的时间，且生产方式更加灵活和个性化，让定制不再成为生产的限制。只需通过电脑将戒指建模、加入支撑结构再导入3D打印设备，并对不同尺码的戒指进行排列组合，设备就会按照建模形态进行批量化制造。高度个性化的特性，还可以在同批产品中尝试不同的设计方案，帮助生产者更快速地找到最佳选择。

（戒指建模示意图）

尽管有先进技术的辅助，戒指繁复的设计还是让研发航空零部件金属3D打印及汽车精密零部件的瑞祥模具碰上了一个“硬茬子”。“制造零部件需要考虑工件的致密度、硬度等力学性能，而戒指是饰品，侧重点完全不同，制作首饰更需要考虑美观与精致。”张秋娟解释道。3D打印完成后的戒指并不是成品，而是支撑材料包裹着的半成品，如何完美去除支撑结构而不损伤GTIIT五个字母拉伸旋转后所产生的凹槽，成为了制作过程中的一大难题。

（切割前的戒指）

为了给毕业生们呈现戒指最完美的一面，设计人员和制作人员经历了无数次的尝试与调整，终于确认了戒指的生产流程。在3D打印完成后，戒指还需经历切割-去支撑-氮化处理（降低硬度）-电解（让凹槽内尽量平滑）-执模-抛光-激光刻字后才算最终完成。假设全部步骤都进展顺利，这个过程也需要5-6天的时间，正可谓是“慢工出细活”。

（不同阶段的戒指形态）

部分毕业生也参与体验了戒指去支撑与初步打磨的流程，在专业人士的指导下，学生们带上手套，借助钳子及不同目数的砂纸，将戒指尽量打磨到接近成品的模样。一个多小时的体验过程，展现了广以学生极强的动手能力。张秋娟表示：“都知道广以学生的学术知识储备丰富，没想到连动手能力都无可挑剔。”

从脑海中的想法，到完整的设计图；从不锈钢材料，到打磨精致的成品 ，这枚戒指承载了学校对第一批“孩子们”的美好祝愿，愿你们走出校门，在广以精神的陪伴下，不忘初心，前程似锦。

学校为“广以一期”准备的毕业大礼包里还有什么呢？接下来，我们将继续揭晓。

——未完待续——

This summer, the first cohort students will graduate from Guangdong Technion-Israel Institute of Technology. Different from tranditional graduation gift such as souvenir books and bags with university logo, GTIIT has prepared a special ring for its graduates. The ring is made of 3D printing technology and each ring has different student number on the inner circle. Each one is unique in the world.

How was this unique ring born? Let’s take a look!

Genesis:

Search for the gift that has GTIIT style

At the beginning of this semester, the university began to prepare for the first graduation ceremony. Graduation gifts is one of the importment step of the preparation. After many times of discussion, the university had a consensus on graduation gift:

(1) It is a graduation gift that can represent GTIIT.

(2) It is a graduation gift from a science and engineering university, which must contain scienific and technological elements.

(3) It is a graduation gift from a China-Israel cooperative university so it had better make with the technology of China-Israel cooperation.

(4) It is a graduation gift for students so it should contain students’ participation and recognition.

After many times of comparsion, the university finally selected the ring as the graduation gift.

Design:

Industrial Design Center, School of Art, Shantou University

This is the office of Mr Li Haoyu and also the place where the design diagram of the ring was born. Mr Li Haoyu showed us the design sketch of the ring and introduced the design principles of it.

The ring shape was inspired by the “Fibonacci spiral”, which is a spiral curve drawn based on the Fionacci sequence. This shape contains profound mathematical principles. Starting from a single point, the five letters of GTIIT spiral upward, continously strech and rotate, and the arc changes from small to large, extending a “GTIIT shape” section. This rising process symbolizes the growth process of GTIIT and emphasizes the visibility of the process.

“The concrete design of GTIIT development process matches the internet thinking, that is, from reading text to reading symbols.” Mr Li told us. This ring is made of stainless steel because compared with other matals, steel is accsociated with science and future. So this matal is more in line with GTIIT’s features of focusing on science and technology and continuously pursuing innovation and development.

Deisgn is a process of modification and improvement and from the design drawing to the final product, it requires constant trial and adjustment.

Location:

Shantou Ruixiang Mould Co.,Ltd.

Walking into the laboratory, the first thing that caught your eye was the 3D printing equipment that is as tall as a person. “This machine can print 54 rings each time. It takes 45 hours. Each ring can be customized in size.” Said Zhang Qiujuan, executive director of Shantou Ruixing Mould Co., Ltd..

This 3D Printing Laboratory was established in 2017 due to the cooperation with Israel Aerospace Industries (IAI). It has been using 3D printing technology for the production and R&Dof IAI aircraft parts. This time, these equipments and staffs “make little use of great talent” to produce GTIIT’s graduation rings.

Compared with traditional casting methods, 3D printing saves costs and time of mode making, and the production methond is more flexible and personalized, so that the number is no longer a production limitation. Just use computer to model the ring, add the support structure and import it into the 3D printing equipment, and combine the rings of different sizes, and the equipment will carry out mass production according to the modeling form. With highly personalized features, people can try different design schemes in the same batch of products, it can help producers find the best choice more quickly.

Although the company has advanced technology and the experience of producing and developing precision parts for aviation and automobiles, the complicated design of the ring has caused a big difficulty for it. “Different from the overall mechanical properties such as density and hardness that need to be considered when making equipment accessories, making jewelry requires more consideration of beauty and exquisiteness.” Mrs Zhang Qiujuan explained. After 3D printing, the ring is not a finished product, but a semi-finished product wrapped with supporting material. How to perfectly remove the supporting structure without demaing the structure of the ring has became a major problem in the production process.

In order to present the perfect rings to the graduates, the designers and production staffs have gone through countless attempts and adjustments, and finally confirmed the production process of the rings. After the 3D printing, the rings need to undergo cutting-de-support-nitriding (reducing hardness)-electrolysis (to make the indentation as smooth as possible)-grinding-polishing-laser engravin. Assuming that all steps are going well, this process also took 5-6 days.

Some graduates also participated in the process of cutting and preliminary polishing process. Under the guidance of professionals, students put on gloves and used pliers and sandpaper of different meshes to polish the rings as close to the finished products as possible. This activity showed the strong hands-on ability of GTIIT students. "We all know that GTIIT students have a wealth of academic knowledge, but I didn't expect that even their hands-on skills are impeccable."said Mrs Zhang.

From the thoughts to the complete design drawings; from stainless steel materials to finished products, this ring represent GTIIT’s best wishes for the first cohort of "children". GTIIT hopes all graduates will have a better future with the spirit of GTIIT.

What else is in the graduation gift package? Next time we will continue to tell you…

——TO BE CONTINUED——

-------------------------------------------

文/图：GTIIT传媒与公共事务部

Text/Photos: GTIIT News & Public Affairs