Integral processing method of plug head and nozzle joint
A technology of overall processing and nozzles, applied in metal processing equipment, manufacturing tools, casting molten material containers, etc., can solve problems such as contamination of molten steel, pouring accidents, and influence on the purity of molten steel, and achieve the goal of ensuring purity and strong erosion resistance Effect
Active Publication Date: 2016-08-24
武汉重工铸锻有限责任公司
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Problems solved by technology
The plug and the nozzle joint are connected by pins. The gap between the top of the plug and the nozzle joint must be filled with refractory mud. The refractory mud enters the molten steel during the pouring process, contaminating the molten steel and affecting the purity of the molten steel.
The plug head of the stopper rod and the nozzle joint are connected by threads, and the plug head is easy to fall off during the pouring process, causing pouring accidents
Method used
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Embodiment Construction
[0013] The present invention will be described in detail below with reference to the accompanying drawings.
[0014] refer to figure 1 , 2 , the concrete steps of the present invention's processing are as follows:
[0015] 1) A cylindrical steel rod made of 2Cr13 and φ40×190 is drilled axially from the center of one end to a nozzle through hole 1 of φ6×190, and a nozzle hole 3 of φ10×110 is axially drilled from the nozzle through hole, and at the interface of the two holes Parts are turned out of the φ40×20 outer circular platform, and the lower part of the outer circular platform is turned out with a 13×45° chamfer to form the load-bearing block 2, and the nozzle joint 8 is finished.
[0016] 2) Positioning pin 5 is installed at the center of the bottom of the mold 4 for processing the plug head, and positioning pin 5 is a round steel bar of φ5×80. Insert the positioning pin 5 in the plug mold 4 into the nozzle joint 8 processed in step 1) and insert it into the nozzle noz...
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The invention relates to a method for integrally machining a plug and a nozzle adapter. An injection through hole is drilled in the center of one end of a cylindrical steel bar in the axial direction, a nozzle spray hole is drilled in the axial direction of the injection through hole, an outer circular truncated cone is turned at the joint of the two holes, a chamfer is turned on the lower portion of the outer circular truncated cone to form a bearing block, and the nozzle adapter is machined completely; a locating pin at the center of the bottom of a plug die is inserted in machined nozzle adapter and the nozzle spray hole, aluminum magnesium carbon refractory powder is placed in the plug die to be pressed to form the plug, the plug is baked, naturally cooled and discharged from a furnace, and therefore a plug and nozzle adapter integrated structure is formed. By means of the method, the position between the top of the plug and the nozzle adapter does not need to be filled with refractory mortar, refractory mortar and the like can not be brought into the structure, the structure can resist corrosion of high-temperature molten steel and is high in anti-washing performance, and the purity degree of molten steel is guaranteed; the structure is formed at a time, threaded connection is not needed, the problem that the plug falls down in the casting process due to the fact that threads of the plug are squeezed by expanded metal threads is avoided, and the requirement that the plug does not fall off in the casting process of large vacuum steel ingots can be met.
Description
technical field [0001] The invention relates to a combined processing method of a plug head and a nozzle joint. Background technique [0002] The market demand for large steel ingots is increasing. At the same time, the quality requirements for steel ingots are getting higher and higher, and the requirements for gas content in steel are also very strict. The pouring process in the atmospheric environment is not conducive to further reducing the gas content in steel, so large steel ingots use vacuum casting. pouring. In the process of vacuum pouring, the stopper system is a pouring switch and injection speed control system, which controls the switch and injection speed of vacuum pouring, and realizes argon blowing operation. The stopper rod system is mainly composed of stopper rod core, plug head, nozzle joint and sleeve brick. In the past, the applicant used a pin or screw thread to connect the plug head of the stopper rod to the nozzle joint. The plug and the nozzle join...
Claims
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IPC IPC(8): B22D41/16
CPCB22D41/16
Inventor 陈绪七蔡春张庆坤苏德平唐继周王高宏曾文峰管绪刚吴小海王瑶彭叠谢彬
Owner 武汉重工铸锻有限责任公司