Micro channel flat pipe mould for horizontal type hot-extrusion

Abstract

The invention discloses a micro channel flat pipe mould for horizontal type hot-extrusion, relating to a mould. The mould comprises an upper mould plate and a lower mould plate, the upper mould plate and the lower mould plate are tightly matched. The module is characterized in that the upper mould plate is provided with two symmetrical flow-dividing holes, one side of each flow-dividing hole is a straight side, the other side of the flow-dividing hole is a circular arc, and two straight sides of the two flow-dividing holes are opposite to each other; the middle parts of the two flow-dividing holes in the upper mould plate are provided with module core slots; the module core slots are internally provided with module cores of the upper module plate; a welding chamber is arranged at a position corresponding to the flow-dividing holes, on the bottom of the upper module plate; a module core of the lower module plate is arranged at a position corresponding to the module core slots, on the lower module plate; the module core of the upper module plate can be concentrically matched with the module core of the lower module plate; and a plurality of uniformly-spaced module needles are arranged at the end parts of the module core of the upper module plate side by side. By adopting the micro channel flat pipe mould for horizontal type hot-extrusion, a porous high-precision micro-channel flat pipe with good uniformity of wall thickness, high precision dimension, clean surface and complicate shape can be manufactured; the service life of the module provided by the invention is 3-6 times longer than the service life of a common extrusion module; and the invention has good thermal stability, thermal fatigue, thermal wear resistance and toughness.

Description

technical field [0001] The invention relates to a mold, in particular to a microchannel flat tube mold for horizontal hot extrusion. Background technique [0002] At present, the dies for the production of aluminum and aluminum alloy flat tubes are used on ordinary Kangfeng extrusion machines. It is difficult for Kangfeng extrusion machines to use ordinary molds to manufacture precision micro-channel flat tubes, and the precision tolerance cannot be controlled. Problems such as longitudinal cracking, penetration between holes, aluminum chips, sand holes, etc. occur, and the extrusion force and extrusion ratio of ordinary Kangfeng extrusion machines are very small compared with horizontal hot extrusion machines, while ordinary molds are used for horizontal hot extrusion It cannot be used when pressing the device. Contents of the invention [0003] The object of the present invention is to provide a microchannel flat tube die for horizontal hot extrusion to solve the above ...

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Problems solved by technology

[0002] At present, the dies for the production of aluminum and aluminum alloy flat tubes are used on ordinary Kangfeng extrusion machines. It is difficult for Kangfeng extrusion machines to use ordinary molds to manufacture precision micro-channel flat tubes, and the precision tolerance cannot be controlled. Longitudinal cracking, penetration between holes, aluminum chips, sand holes and other problems occur. The extrusion force and extrusion ratio of ordinary Kangfeng extrusion machine are very small compared with horizontal hot extrusion machine, while ordinary molds are used for horizontal hot extrusion When the device is pressed, it cannot be used

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