ing process utilizing a 50 ksi grade of steel casting to an ASTM A958 specification, which is one of a number of standard grades for the structural market. The two companies used a collaborative relation- ship to produce the connections. There was feedback, give-and-take, input, and evidence of a strong profes- sional relationship. “Not everybody can do this because there are a lot of


technical and quality back-and-forth between the two because of the importance of these components, not only the structural integrity but also the expectation visually,” Braun said. “In addition, the precision needs to be put in the weld-prep areas so that these castings fit into the plane. Tis allows them to be fabricated in position with- out creating potential dimensional issues at the fabricator when he goes to do fit-up.” Braun said “getting off on the right foot” was


important for the project. The metalcaster didn’t want to get far along and find out the finished component did not match expectations. Representatives of differ- ent parts of the project’s chain were invited to see the castings and provide feedback. “Getting that first article done and understanding that


you’ve laid the part out properly, and have machined it within the plane is why we do the 3-D overlay,” Braun said. “Or we’ll lay it out and then send them the file, and they will then put it in the envelope to make sure that it complies. Once you’ve got that locked down, then you can be sure your subsequent parts are going to yield the preci- sion that’s required in the dimensional component.” Other manufacturing processes theoretically could


have been used to create this component. Casting, however, brought many distinct advantages. Beyond the aesthetics, it holds an ability to handle a bigger range of challenges, not to mention the absence of weld joints, leading to more capability to handle stresses. “One of the advantages is the ability to make shapes


that are aesthetically pleasing to an architect,” Braun said. “If you combine those with the various grades and strengths that steel offers in addition to its weldability, it really gives you a number of options that allow you to cast shapes that are extraordinarily difficult or almost impos- sible to fabricate.” Projects like these have another advantage: it can help


a firm like Bradken continue to make its mark in the architectural world. Bradken is a member of the Ameri- can Institute of Steel Construction, and Braun and de Oliviera have given co-talks on the use of steel castings and the benefits they can bring. “We can say not only do we believe this, we’re actually doing it and we’ve done it in this example, this example and this example,” Braun said. “You don’t want somebody who’s never done one before that says ‘Yeah, I think we can cast that shape,’ because it’s about understanding what you’re casting, why you’re casting and what’s important on that casting.” ■


ङ֡牢֨。ў铸接连ф生系Ҽҁ合立建՛Ҹ؟Д


合ҁҼ系И既有॥极ङՆ馈、意见с换，Э有资源һ цչખચ。


有ѫ间Ф՛Ҹ؟Д，性要重ङў铸п这йंȔ


整完构ৈйҼ是юЉ，ખ讨זՆङ量ૅչ术技ך很 ӱҟਈ都ы有۱是Љ此֜，望期ङ观יث有还，性 ҅，چতङ点接焊ਖ਼ৰ要，י此Ȕ，પT[GX(ȕ，ङ Դ工֨љՕў铸，样这。Ї面平ӱ接焊й易לਈў铸 ȕ。题问ङ面方ت尺有ѫЉ时配装、ф生 铸。ङ要重常非是ऩ项ثȕ端开ङױȔОઍT[GX(


Љ是ў铸ङф生现Շ۵եФ始开ऩ项ঈ望٥Љ՛Ҹ造 检੧进ў铸ث੮їङ门部՟ऩ项બћѕ。ङ期预合অ 查并提ӟғ改意见。 ，置ѹङे正֨置放ґे，սфў一আױҟȔ


并加工连接ङ平面，这就是我ћ采ՈІ维模型ङԽ رե然，ў铸置放үћ我，ৱ或Ȕ：પT[GX(ȕ，֜ ઁ合অў铸ґेљצў文进放ҿر，ћѕোՇў文 І有Ӏў铸ङф生եФґेљՕ，ե定锁پ३当。定 ȕ。چতङ求要۱ў铸维 理ખЇ，ЭՕ采用ҿѕ生ф工ਫ生фથ部ў。Ѹ


还它，י感২有Ӏ除。势ѩӟ突ך很有ਫ工造铸，是 ֜，迹कङ接焊有没还ӑѾ，战挑ङם更ث应力ਈ有 ङ力应Չ承ך更дוӀў铸ङф生ਫ工造铸用采，此 ਈ力。 ȔҿИङ一Зѩ点是Ӏ有成形ङਈ力，অ合建উ


强չ级ঈգЉرћ我果ײȔ：પT[GX(ȕ，২审ङ٤ 项ОљՕ实े状形գЉङў铸，来起接焊ङ材钢ङچ ਈՕЉЧәਙ甚难很是状形п这৲，案方ך很供提ऩ 用ҿѕ工ਫ生фӟ来ङ。ȕ ঝѷ这样ङ项ऩ还有ҿѕѩ点：它Օљ帮助ѣ


己ਘ高提ֿ领উ建֨续继，՛ҸTKQJGX(ײ比，Џ ѫङѫ协构ৈ铁钢国২是՛ҸTKQJGX(。چդऽङ մ，(XG[TչJK 5RO\OKXG已经就铸钢ўङ҅用չѩ点 进੧д讨ખ。


Ȕ我ћЉюबҒ它Ӏ有ङѩ点，我ћ还实际生ф Ȕ：પT[GX(ȕ，功成д得Ո经已Иऩ项З这֨Ќ并 Օћ我Ғब我，ङ是ȐપӹФҁ操૪实有没֨ыЗ一 О֜，ङҒबѫЉ是҂ȑ，ў铸ङ样这ӟф生功成љ 理ङ点重是Тэ、造铸ТэО、Тэ造铸йثЧҼ这 આ。ȕ ■


46 | FOUNDRY-PLANET.COM | MODERN CASTING | CHINA FOUNDRY ASSOCIATION June 2016


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