Heat mounting method for bracket-quoit trunnion
A technology of trunnions and support rings, applied in metal processing, metal processing equipment, manufacturing tools, etc., can solve the problems of long production cycle, increased cost of tooling production, and heavy calculation workload, so as to reduce production cost and shorten production Cycle, the effect of simplifying design and production
Inactive Publication Date: 2005-11-30
BOHAI SHIP HEAVY IND CO LTD
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Problems solved by technology
However, the design of the sliding tooling or device is not easy to calculate and the workload is large, and the production of the tooling increases the cost
Generally speaking, although the thermal mounting of the trunnion of the converter support ring is safe and reliable, the economic benefit of the product is poor and the production cycle is long, so it cannot be the best technical solution
Method used
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[0015] The heat mounting method of the support ring includes the following process steps:
[0016] According to the support ring, the two sector segments 3, 4 and the two trunnion blocks 1, 6 are welded into an integral structure. After the overall annealing, the trunnion holes are processed by the boring machine on both sides of the trunnion blocks 1, 6, and the trunnions 2, 5 are respectively After machining, it is hot-mounted with the trunnion blocks 1 and 6, and the trunnions 2 and 5 on both sides meet the technical requirement that the coaxiality is less than or equal to 1 mm, see figure 1 . Place the support ring on the 400-600mm high laid support pier 7, and adjust the support ring to a horizontal state. At this time, the outer end faces of the two trunnion blocks 1 and 6 must be kept at the cross center of the trunnion hole drawn during machining. Lines are clear.
[0017] The trunnion blocks 1 and 6 are heated by far-infrared heaters. For the arrangement of far-infr...
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This invention relates to heat insert method for hold loop trunnion and comprises following steps: set rest pier and hold loop on pier of horizontal level; use far infrared heating plate that distributes in and out the trunnion to heat; control the process with temperature controller; the heating velocity is 50 -80íµ / h, keep temperature for 3-4h when achieving 300Deg; lift on the trunnion with hoist to adjust and align with its center; move horizontally the hoist toward hold loop, push and move forward the trunnion on its tail to heat insert the trunnion on hold loop. This method leaves out special workpiece or device in existing technique, just needs simple tools to finish the assembly work, simplifies preparation process, decreases cost and can entire satisfy the technical request of axiality less or equal to 1mm.
Description
(1) Technical field [0001] The invention relates to a mutual assembling method of a large-scale shaft workpiece and a shaft hole, in particular to a method for hot mounting of a support ring trunnion. (2) Background technology [0002] The support ring is the key equipment of the steelmaking converter. According to the connection method of the trunnion and the trunnion block on the support ring, the tool structure can be divided into two types: one is the support ring in which the trunnion and the trunnion block on the support ring are welded ; The other is the support ring in the form of hot-mounting of the trunnion and the machined trunnion block. The trunnion and the trunnion block are assembled by transition fit. The structure of the support ring is shown in figure 1 . The support ring is a steel welded structural part, which is welded by two sectors and two trunnion blocks. The heat-mounted support ring uses a heat-mounting process to install the trunnions on both side...
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IPC IPC(8): B23P11/02
Inventor 马才滕宏鹏谭立新黄仲宁朱立国万璀钰陈凯郭文君
Owner BOHAI SHIP HEAVY IND CO LTD