PRODUCTION METHOD AND PRODUCTION FACILITY OF METAL PIPE

A production method of a metal pipe which can suppress quenching defects is provided. In the production method of a metal pipe according an embodiment of the present invention bend of the metal pipe is straightened by a straightening machine . Next, both pipe end portions of the metal pipe whose bend has been straightened are cut off by a pipe cutting apparatus . Next, a plurality of the metal pipes whose both pipe end portions have been cut off are aligned in the axial direction thereof to be conveyed to a quenching apparatus , and the metal pipes are quenched by being cooled after being heated by induction heating. 1. A production method of a metal pipe , comprising the steps of:straightening bend of the metal pipe by a straightening machine;cutting off both pipe end portions of the metal pipe whose bend has been straightened; andconveying a plurality of the metal pipes whose both pipe end portions have been cut off, to a quenching apparatus, and quenching the metal pipes by cooling after heating by induction heating the metal pipes in the quenching apparatus.2. The production method according to claim 1 , whereinthe quenching apparatus comprises:an induction heating coil disposed at an entrance side of the quenching apparatus; anda cooling apparatus cooling the metal pipe by using a coolant, the cooling apparatus being disposed at an exit side of the quenching apparatus, whereinin the step of quenching, metal pipes aligned fore and aft are conveyed with pipe ends thereof being abutted to each other in the quenching apparatus.3. The production method according to claim 1 , whereina production facility used for the production method comprises:the straightening machine;the quenching apparatus;a conveyor conveying the metal pipe whose bend has been straightened toward the quenching apparatus, the conveyor being disposed between the straightening machine and the quenching apparatus; anda pipe cutting apparatus cutting off both pipe end portions of the metal pipe whose ...

Metal pipe manufacturing method and manufacturing equipment

Manufacturing method and cleaning equipment for seamless tube

A seamless tube is manufactured while effectively suppressing the occurrence of carburization in the seamless tube without interfering with operations. A seamless tube is manufactured by a step of washing at least a portion of a conveyor installed in a conveying step of a mandrel bar B which is situated from a lubricant applying device 7 to the entrance of a mandrel mill 8 , a step of washing, on the upstream side of the lubricant applying device 7 , a mandrel bar B which was used for elongation rolling, and a step of applying a non-graphite-based lubricant to the mandrel bar B with the lubricant applying device 7 , wherein the conveyor and the mandrel bar B are each washed such that the amount of graphite C2 (g/m 2 ) adhering to the surface of the mandrel bar B before it is provided to elongation rolling and the amount of carbon C1 (g/m 2 ) contained in the organic binder of the applied lubricant satisfy Equation 1: 0.08×C1+0.05×C2≦3 and Equation 2: 3≦C1+C2≦50.

Metal pipe manufacturing method and manufacturing equipment

Production method and installation of metal pipe production

resumo “método de produção e instalação de produção de tubo de metal” trata-se de um método de produção de um tubo de metal que pode suprimir defeitos de resfriamento brusco. no método de produção de um tubo de metal de acordo com uma modalidade da presente invenção, uma dobra do tubo de metal é desempenada por uma desempenadeira 10. em seguida, ambas as porções de extremidade de tubo do tubo de metal cuja dobra foi desempenada são cortadas por um aparelho de corte de tubo 20. em seguida, uma pluralidade dos tubos de metal em que ambas as porções de extremidade de tubo tenham sido cortadas é alinhada na direção axial dos mesmos para serem conduzidos para um aparelho de resfriamento brusco 30, e os tubos de metal são resfriados bruscamente ao serem resfriados após serem aquecidos por aquecimento por indução. 1/1 Summary “Metal pipe production facility and production method” is a metal pipe production method that can suppress sudden cooling defects. In the method of producing a metal tube according to one embodiment of the present invention, a metal tube bend is performed by a bender 10. Then, both tube end portions of the metal tube whose bend has been performed are then a plurality of metal pipes in which both pipe end portions have been cut are aligned in the axial direction thereof to be led to a blast chiller 30, and The metal pipes are cooled sharply when cooled after being heated by induction heating. 1/1

two-dimensional code reading device, two-dimensional code reading method, method of controlling historical information of limb manufacturing that has circular section orthogonal to the central geometric axis of the same, and method of limb manufacturing using the control method

DISPOSITIVO DE LEITURA DE CÓDIGO BIDIMENSIONAL, MÉTODO DE LEITURA DE CÓDIGO BIDIMENSIONAL, MÉTODO DE CONTROLE DE INFORMAÇÃO DE HISTÓRICO DE FABRICAÇÃO DE MEMBRO QUE TEM SEÇÃO SUBSTANCIALMENTE CIRCULAR ORTOGONAL AO EIXO GEOMÉTRICO CENTRAL DO MESMO, E MÉTODO DE FABRICAÇÃO DO MEMBRO QUE USA O MÉTODO DE CONTROLE. Problema a ser resolvido São apresentados um dispositivo de leitura de código bidimensional e um método de leitura de código bidimensional para a leitura de um código bidimensional gravado em um membro que tem uma seção substancialmente circular ortogonal ao eixo geométrico central do mesmo, bem como um método de controle de fabricação de informação de histórico usando o dispositivo de leitura e um método de fabricação do membro que usa o método de controle. Solução Uma porção côncava 11 gravada no membro em que um código bidimensional 10 é formado tem um par de uma primeira porção inclinada 12 e uma segunda porção inclinada 13 que são inclinadas a fim de formarem um ângulo (beta) em relação a uma direção de linha normal R de uma superfície do membro. Um dispositivo de leitura de código bidimensional 20 é apresentado com meio de captação de imagem 22 que recebe a luz refletida a partir de cada uma da primeira (...). BIDIMENSIONAL CODE READING DEVICE, BIDIMENSIONAL CODE READING METHOD, MEMBER MANUFACTURING HISTORY INFORMATION CONTROL METHOD THAT HAS A SUBSTANTIALLY CIRCULAR CIRCULAR SECTION TO THE CENTRAL GEOMETRIC EXYMETRIC AXIS OF THE CENTRAL, METHOD OF THE CENTRAL GEOMETRIC HYDROMETER. . Problem to be solved A two-dimensional code reading device and a two-dimensional code reading method are presented for reading a two-dimensional code engraved on a member that has a substantially circular section orthogonal to its central geometric axis, as well as a method manufacturing history information control using the reading device and a member manufacturing method using the control method. Solution A concave portion 11 engraved on the member on which a two- ...

Two-dimensional code reading device, method for reading two-dimensional code, method for managing manufacture history information about member with substantially circular shape of section perpendicular to center axis, and method for manufacturing the member by using the managing method

Production method and production facility of metal pipe

A method of producing a metal pipe which can suppress quenching defects is provided. In the method, a bend of the metal pipe is straightened by a straightening machine 10 . Next, both pipe end portions of the metal pipe whose bend has been straightened are cut off by a pipe cutting apparatus 20 . Next, a plurality of the metal pipes whose both pipe end portions have been cut off are aligned in the axial direction thereof to be conveyed to a quenching apparatus 30 , and the metal pipes are quenched by being cooled after being heated by induction heating.