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A method for preventing titanium from sticking to the guide plate of the piercer
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A technology of piercing machine and guide plate, applied in the field of titanium tube rolling, can solve the problems of sticking titanium and reducing product quality, and achieves the effects of improving quality and yield, low cost, and improving technology maturity.
Active Publication Date: 2019-07-26
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD +1
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Abstract
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Problems solved by technology
Compared with the extrusion process, cross-rolling piercing has a more significant low-cost advantage, but in the process of pure titanium oblique piercing, the phenomenon of "titanium sticking" between the titanium tube and the guide plate occurs, which reduces the product quality
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Embodiment 1
[0039] Perforate the TA2 pure titanium seamless pipe with an outer diameter of Ф225mm, a length of 2800mm, and a production specification of Ф259×25mm: roughen the guide plate; spray a layer of anti-bonding with a thickness of 0.2mm on the surface of the guide plate coating; the anti-adhesion coating is made of epoxy resin 100g, Al 2 o 3 Powder 400g, curing agent 2g, dispersant 1g, water 5g;
[0040] Set the roll distance as 200mm, the guide distance as 236mm, the guide disk speed as 0.8m / s, the rolling speed as 0.38m / s, and perforate.
[0041] After the above method, the guide plate was successfully prevented from sticking to titanium, and the titanium sticking rate was below 2%. After the hole was completed, the coating on the contact surface between the titanium tube and the guide plate was completely consumed, and the phenomenon of “titanium sticking” did not occur on the guide plate.
Embodiment 2
[0043] Perforate the TA2 pure titanium seamless pipe with an outer diameter of Ф115mm, a length of 3500mm, and a production specification of Ф136×9mm: roughen the guide plate; spray a layer of anti-bonding with a thickness of 0.15mm on the surface of the guide plate coating; the anti-adhesion coating is made of epoxy resin 80g, Al 2 o 3 Powder 450g, curing agent 1g, dispersant 0.5g, water 2g;
[0044] Set the roll distance as 105m, the guide distance as 130mm, the guide disk speed as 1.7mm / s, the rolling speed as 0.60mm / s, and perforate.
[0045] After the above method, the guide plate was successfully prevented from sticking to titanium, and the titanium sticking rate was below 2%. After the hole was completed, the coating on the contact surface between the titanium tube and the guide plate was completely consumed, and the phenomenon of “titanium sticking” did not occur on the guide plate.
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Abstract
The invention belongs to the technical field of titanium tube rolling and particularly relates to a method for preventing a guide disc of a piercing machine from adhering titanium. The method for preventing the guide disc of the piercing machine from adhering the titanium includes the steps of a, pretreatment, namely subjecting the guide disc of the piercing machine to roughing treatment; b, overlay coating, namely coating the guide disc of the piercing machine subjected to roughing treatment with a coating 0.1-0.3 mm in thickness; c, piercing process setting, namely setting the rotating speed of the guide disc as 0.5-2 m / s, rolling speed as 0.33-0.8 m / s, and ovality >=1.15; d, piercing, namely piercing a titanium tube. The method for preventing the guide disc of the piercing machine from adhering the titanium has the advantages that the guide disc can be prevented from adhering the titanium during cross piercing of pure-titanium seamless tubes, product quality is improved, rate of finished products is increased, continuous production is achieved, the cross piercing technology advantages are given to full play, and technology maturity is improved; smoothing the full-process technological process of cross piercing is facilitated, and continuous, low-cost and large-scale production is achieved.
Description
technical field [0001] The invention belongs to the technical field of titanium tube rolling, and in particular relates to a method for preventing titanium sticking to a guide plate of a piercer during the perforation process of a titanium tube. Background technique [0002] Titanium tube is one of the most widely used and indispensable titanium products. The thin-walled titanium seamless pipe is one of the most widely used varieties of titanium pipe products. The production process of thin-walled pure titanium seamless pipe includes extrusion + cold rolling / cold drawing and cross rolling piercing (piercing - hot continuous rolling - constant diameter reduction). Compared with the extrusion + cold rolling / cold drawing process, the cross rolling and piercing process has higher production efficiency, higher yield (about 15%), and easier control of internal and external surface quality. If the extrusion process is replaced by the cross-rolling perforation process, it will h...
Claims
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Application Information
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