SU795610A1

SU795610A1 - Method of producing t-branches from tube blanks

Info

Publication number: SU795610A1
Application number: SU782633433A
Authority: SU
Inventors: Владимир Иванович Назаров; Сергей Васильевич Баранов; Юрий Михайлович Рязанцев
Original assignee: Новосинеглазовский Комбинатстроительных Конструкций
Priority date: 1978-06-27
Filing date: 1978-06-27
Publication date: 1981-01-15

Description

Изобретение относится к обработке металлов давлением, а именно к производству соединительных деталей трубопроводов, в частности тройников.The invention relates to the processing of metals by pressure, and in particular to the production of fittings for pipelines, in particular tees.

Известен способ изготовления тройников из трубных заготовок, включающий введение в заготовку пуансона-оправки, овализацию заготовки, обжим концевых ее участков с одновременной формовкой патрубка, а также пробивку в нем отверстия и окончательную формовку получен- ¹ного тройника [1].A known method of manufacturing tees from tube blanks, including introducing a mandrel punch into the blank, ovalizing the blank, crimping its end sections with simultaneous molding of the nozzle, as well as punching holes in it and final molding of the obtained ¹ tee [1].

Недостаток известного способа состоит в повышенном расходе металла на изготавливаемый тройник, так как особен— , ности технологической схемы обуславливают необходимость использования толстостенных заготовок.The disadvantage of this method is the increased consumption of metal on the manufactured tee, since the features—, the features of the technological scheme necessitate the use of thick-walled blanks.

Цель изобретения - повышение коэффициента использования металла. jThe purpose of the invention is to increase the utilization of metal. j

Цель достигается тем, что овализацию заготовки производят приложением касательно направленных усилий к двум противоположным боковым ее сторонам с под2 пором пуансоном-оправкой участка заготовки в зоне последующей формовки патрубка.The goal is achieved by the fact that the workpiece is ovalized by applying relative efforts to its two opposite lateral sides with a pore punch mandrel of the workpiece section in the area of the subsequent pipe forming.

На фиг.1 показана схема обработки заготовки в штампе/ на фиг. 2 - тройник5 полуфабрикат перед окончательной формов— . кой; на фиг. 3 - готовое изделие.In Fig.1 shows a diagram of the processing of the workpiece in the stamp / in Fig. 2 - tee; 5 prefabricated before final forms—. Coy in FIG. 3 - finished product.

Обработка заготовки, нагретой до температуры штамповки, осуществляется в штампе, содержащем нижнюю и верхнюю ¹⁰ формовочные матрицы 1 и 2, опорный брус 3, консольно-онирающийся на подвижную опору, с установленным на нем профильным элементом '4. Опорный брус 3 с профильным элементом 4 образуют пу— ^,5 ансон-оправку. В верхней части формовочной полости матрицы 2 установлен пробивной пуансон 5, а в элементе 4 выполнено ответное отверстие.The processing of a workpiece heated to a stamping temperature is carried out in a stamp containing the lower and upper ¹⁰ molding matrices 1 and 2, a support beam 3, cantilevered against a movable support, with a profile element '4 installed on it. The supporting beam 3 with the profile element 4 form a pu- ⁵ anson mandrel. A punch 5 is installed in the upper part of the molding cavity of the matrix 2, and a return hole is made in the element 4.

В заготовку 6 вводят пуансон-оправку ²⁰ Ходом ползуна пресса вниз формовочная матрица 2, надвигается на висящую на пуансоне—оправке заготовку большего, чем профиль матрицы, диаметра, изгибаяA mandrel punch ²⁰ is inserted into the blank 6. By moving the press slider down the molding matrix 2, it moves on a blank larger than the die profile, hanging on the mandrel punch, by bending

765610 стенки эаготовки в направлении оси прохода, т.е. происходящая при этом овализация заготовки осуществляется за счет приложения- касательно направленных усилий к двум противоположным боковым сторонам заготовки. Кромки нижней матрицы *в процессё овализации заготовки не принимают участия. От потери устойчи-’ вости стенку заготовки в зонах, прилегающих к экваториальному сечению, удерживают стенки матрицы 2. Одновременно с формовкой концевых участков заготовки и патрубка в конце хода производят пробивку отверстия.765610 wall eagotovki in the direction of the axis of the passage, i.e. the ovalization of the workpiece occurring at the same time is carried out due to the application of directed forces to the two opposite sides of the workpiece. The edges of the lower matrix * do not take part in the process of ovalization of the workpiece. From the loss of stability, the walls of the workpiece in the areas adjacent to the equatorial section are held by the walls of the matrix 2. Simultaneously with the formation of the end sections of the workpiece and the pipe at the end of the stroke, a hole is punched.

Все эти операции осуществляли последовательно за один установ заготовки и один ход ползуна пресса.All these operations were carried out sequentially in one installation of the workpiece and one stroke of the press slider.

Окончательную формовку тройника отбортовку патрубка и обжим корпуса производят обычным методом.The final forming of the tee flanging the pipe and crimping the body is carried out by the usual method.

Предлагаемый способ изготовления тройников из тонкостенных трубных заготовок позволяет увеличить устойчивость стенки трубной заготовки при поперечном обжиме, благодаря чему степень обжима может быть доведена до 15%.The proposed method of manufacturing tees from thin-walled pipe billets can increase the stability of the wall of the pipe billet with transverse crimping, so that the degree of crimping can be brought up to 15%.

Так , при обжиме заготовок диаметром Д^_а|- 159 мм до Ддет-138,5 мм (коэффициент обжима 1,15) допустима толщина ее стенок S -6,0 мм. Эта величина позволяет квалифицировать заготовку тонкостенной в отличие от используемых обычно заготовок с толщиной стенок 5 -8 мм.So, when crimping workpieces with a diameter D ^ _{a |} - 159 mm to Ddet-138.5 mm (crimping ratio 1.15), the thickness of its walls S-6.0 mm is permissible. This value allows you to qualify the workpiece thin-walled in contrast to the commonly used workpieces with a wall thickness of 5 -8 mm.

Снижение толщины исходной заготовки на 33% позволит, при сохранении требуемой прочности, снизить на ту же величину металлоемкость изделий, т. е. повысить коэффициент использования металла.Reducing the thickness of the initial billet by 33% will, while maintaining the required strength, reduce the metal consumption by the same amount, i.e., increase the utilization of metal.

Claims

The invention relates to the processing of metals by pressure, in particular to the production of pipeline fittings, in particular tees. A known method of making tees from tubular blanks includes inserting a mandrel mandrel into the blanks, ovalizing the blanks, crimping its end sections with simultaneous forming of the nozzle, and punching it out of the tee 1. The disadvantage of the known method consists in increased metal consumption and the manufactured tee, since the features of the technological scheme necessitate the use of thick wall blanks. The purpose of the invention is to increase the utilization rate of the metal. The goal is achieved by the fact that the billet is ovalized by applying, with respect to the directed forces, to two opposite lateral sides with no / t a pore-mandrel of the region. tovki in the zone of the subsequent forming of the pipe. Figure 1 shows the processing scheme of the workpiece in the stamp / Fig. 2 - tee semi-finished product before final molding, - on fig.Z - finished product. The processing of the billet heated to the stamping temperature is carried out in the stamp containing the lower and upper molding dies 1 and 2, the support bar 3, which can be supported on the movable support, with the profile element 4 mounted on it. punch mandrel. In the upper part of the molding cavity of the matrix 2 is installed pro0iv. punch 5, and in element 4 there is a return hole. The workpiece is introduced into the workpiece 6 (the press slider M down the molding matrix 2) is pulled over a workpiece larger than the profile of the diameter of the workpiece wall in the direction of the axis of the workpiece, i.e. This oval is made by applying - regarding the directed efforts to two opposite side blanks. The edges of the lower ipiinbi mat in the npOTiecce ovalization of the blank do not participate. From the stability of the blank wall in areas adjacent to cross section, hold the walls of the matrix

2. Simultaneously with the molding of the end sections of the billet, the hole is punched at the end of the stroke at the end of the stroke. All these operations were carried out sequentially in one set of the workpiece and one stroke of the press ram. The final forming of the tee flanging the pipe and crimping the body is carried out by the usual method. The proposed method of making tees from thin-walled billets allows to increase the resistance of the wall of the billet during cross-crimping, whereby the crimping rate can be increased to 15%. Thus, when crimping workpieces with a diameter O. 159 mm to Ddeth is 138.5 mm (with a compression ratio of 1.15), its wall thickness S 6.0 mm is permissible. This value allows you to qualify billet 7 0 thin-walled, unlike bribery used blanks with SrSMWi wall thickness Reducing the thickness of the original billet by 33% will, while maintaining the required strength, reduce the metal consumption of products, i.e., increase the utilization rate metal. Claim making method for making tees from tubular blanks, including inserting a mandrel mandrel into the blanks, ovalizing the blanks, crimping its end portions while simultaneously forming the nozzle, and punching a hole in it and final shaping the resulting tee, characterized by the fact that metal, the billet ovalization of the billet is applied by applying, with respect to the directed forces, two opposite sides of the billet zone subsequent formation of the pipe. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 199800, cl. B 21 C 37/29, 03.05.66.

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