摘要:
This invention relates to a method and apparatus for manufacturing a titanium alloy bolt through a warm forging process. The apparatus includes a feeding device (100) for supplying raw material (W) which is cut into a fixed length from a titanium alloy rod, a loader (200) for carrying the raw material (W) supplied from the feeding device (100), a heating device (300) for heating the raw material (W), a forging device (400) provided with a forging die (420) which fabricates a forging (F) from the heated raw material (W), a guiding device (500) for conducting the heated raw material (W) into the forging die (420), a heat-treating device for heat-treating the forging (F), a peeling device for removing the oxidized layer on the hear-treated forging (F), a machining device for machining the desired portions of the forging (F) from which the oxidized layer is peeled, a form rolling device for forming a thread on an outer surface of the machined forging (F) in order to obtain the titanium alloy bolt, and a cleaning device for cleaning the entire surface of the titanium alloy bolt. Dimensional accuracy and mechanical properties of the titanium bolt, and productivity are improved by the present invention.
摘要:
An upsetting method capable of reducing a molding pressure is provided. The upsetting method uses a receiving die 11 and a guide 20 having an insertion hole 23 for inserting and holding a diameter expansion scheduled portion 2 of the raw material 1 in a buckling prevented state and in an axially slidable manner, the insertion hole being penetrated from the basal end to the tip end of the guide 20. The method includes a step of receiving the diameter expansion scheduled portion 2 of the raw material 1 by the receiving portion 13 of the receiving die 11 and disposing the diameter expansion scheduled portion 2 of the raw material 1 in the insertion hole 23 of the guide 20, and a step of expanding a diameter of the diameter expansion scheduled portion 2 of the raw material 1 exposed between the tip end face 21a of the guide 20 and the receiving portion 13 of the receiving die 11 by moving the guide 20 in a direction opposite to a pressurizing direction of the diameter expansion scheduled portion 2 of the raw material 1 while pressurizing the diameter expansionscheduledportion2 of the rawmaterial 1 withapressurizing means 30 in an axial direction, after the step of disposing the diameter expansion scheduled portion 2 of the raw material 1. At the diameter expanding step, the diameter expansion is performed in a state in which a portion 2a of the diameter expansion scheduled portion 2 of the raw material 1 corresponding to a tip end portion 21 of the guide 20 is locally heated by the heating means 40.
摘要:
A forming method wherein a billet (31, 66, 77, 87, 107, 128, 136, 144, 153, 77B, 77C) comprising a metal based composite material (27) prepared by mixing an aluminum alloy (22) and a ceramic (15) is subjected to pressure forming to manufacture a formed article, which comprises carrying out the pressure forming by the use of different compression ratios for different portions of the formed article, wherein a compression ratio means the ratio of the height of a billet before the pressure forming to the height of the billet after the pressure forming. The above forming method allows the manufacture of a formed article having different volume contents (Vf) of the ceramic for different portions thereof.
摘要:
A forming method wherein a billet (31, 66, 77, 87, 107, 128, 136, 144, 153, 77B, 77C) comprising a metal-based composite material (27) prepared by mixing an aluminum alloy (22) and a ceramic (15) is subjected to pressure forming to manufacture a formed article, which comprises carrying out the pressure forming by the use of different compression ratios for different portions of the formed article, wherein a compression ratio means the ratio of the height of a billet before the pressure forming to height of the billet after the pressure forming. The above forming method allows the manufacture of a formed article having different volume contents 8Vf) of the ceramic for different portions thereof.
摘要:
Beschrieben wird eine als Sprühkopf ausgebildete Vorrichtung zum Schmieren und Kühlen von Formen, insbesondere von Schmiedegesenken und Werkzeugen in der Umformtechnik, bei der die Zuführkanäle für Kühlmittel, Druckluft und Schmiermittel in einem gemeinsamen kompakten Gehäuse (1) untergebracht, aber voneinander getrennt verlaufend ausgebildet sind und bei der diesen getrennten Strömungskanälen jeweils Sprühdüsen (20, 17) zugeordnet sind, die speziell für das Versprühen des Schmiermittels bzw. für das Versprühen des Kühlmittels ausgelegt sind. Durch diese Maßnahme kann der Sprühvorgang optimal ausgelegt werden und es wird möglich, Schmiermittel- und Kühlmittelverbrauch gering zu halten.
摘要:
A full enclosed die forging method utilizes a forging material which comprises crystal grains of different phases and whose recrystallization temperature is T1 and whose melting point is T2. And, while the forging material is enclosed in a die, the forging is carried out by a punch to the forging material in a temperature range not less than T1 and not higher than (T1+T2)/2 . Thus, the dynamic recrystallization is promoted to be able to obtain complicated shaped products with high plastic workability.
摘要:
Process and apparatus for upset forging a long stand of solid malleable metal bar stock (24) in a single pass is capable of gathering a large volume of the bar stock (24) into a complex shaped element. The end of the bar stock is selectively heated to provide an intermediate section (46a) thereof to a desired upper forging temperature and an end section (46b) thereof at a desired lower forging temperature. The heated bar stock is positioned in an upset forging die cavity (20, 22). A forging punch (92) enters the cavity to upset the long stand to fill the cavity (24) firstly with the upset intermediate section (46a) and then the remainder of the cavity (86) with the end section which is at a lower forging temperature. A friction reducing material is provided in the cavity to provide for sliding of the end section (46b) along the cavity while the end section (46b) upsets and gathers the intermediate section (46a) of the bar in the major portion of the upset cavity section (84).