阅读说明：本技术 一种普通挤压机生产无缝铝管的加工方法 (Processing method for producing seamless aluminum pipe by using common extruder ) 是由 丁良生 赵林君 于 2021-08-24 设计创作，主要内容包括：本发明提供了一种普通挤压机生产无缝铝管的加工方法,包括以下步骤：S1：基于现有挤压生产线,更换挤压杆、配套模具,生产出无缝铝管；S2：采用所生产无缝铝管的内、外径尺寸、主缸行程、盛锭筒内孔尺寸,加工出挤压杆和配套模具,模拟穿孔挤压方法。本发明是一种普通挤压机生产无缝铝管的加工方法,在普通挤压机的基础上更换一条特别挤压杆及一个配套模具,即可生产各种规格无缝铝管。(The invention provides a processing method for producing a seamless aluminum pipe by using a common extruder, which comprises the following steps: s1: based on the existing extrusion production line, the extrusion rod and a matched mould are replaced to produce a seamless aluminum pipe; s2: the extrusion rod and the matched die are processed by adopting the inner and outer diameter sizes of the produced seamless aluminum pipe, the stroke of the main cylinder and the size of the inner hole of the ingot container, and the perforation extrusion method is simulated. The invention relates to a processing method for producing seamless aluminum pipes by a common extruder, which can produce seamless aluminum pipes of various specifications by replacing a special extrusion rod and a matched die on the basis of the common extruder.)

1. A processing method for producing a seamless aluminum pipe by a common extruder is characterized by comprising the following steps:

s1: based on the existing extrusion production line, the extrusion rod and a matched mould are replaced to produce a seamless aluminum pipe;

s2: processing an extrusion rod and a matched die by adopting the inner and outer diameter sizes of the produced seamless aluminum pipe, the stroke of a main cylinder and the size of an inner hole of a spindle container, and simulating a perforation extrusion method;

s3: the extrusion rod comprises a first part main rod and a second part auxiliary rod; the diameter of the main rod except the large diameter part is the same as that of the original extrusion rod, the auxiliary rod and the main rod are integrally processed, and the diameter of the auxiliary rod is equal to the inner diameter of the formed seamless aluminum pipe;

s4: the external diameter of the matched die is the same as that of the original die, the protruding cylinder is arranged, the protruding cylinder and the die main body are processed into a whole, the diameter of the inner hole of the protruding cylinder is + 1% of the external diameter of the formed seamless aluminum tube, and the smoothness of the inner hole of the protruding cylinder is consistent with that of a conventional die working belt; the mould main body is processed into a through hole along the axis of the convex cylinder, and the diameter of the through hole is 8mm larger than the diameter of the inner hole of the convex cylinder;

s5: when producing seamless aluminum tubes, the original extrusion rod is replaced by the extrusion rod of the invention, and the matched mould and hollow aluminum bar are used, and the method is carried out according to a perforation extrusion method.

2. The process for manufacturing a seamless aluminum pipe using a conventional extruder as claimed in claim 1, wherein the length of the main shaft is equal to the length of the inner hole of the spindle case, and the main shaft has a 20mm long diameter portion at the top end thereof.

3. The processing method of a seamless aluminum pipe by a general extruder as recited in claim 1, wherein the length of the sub-rod is 50% of the stroke of the main cylinder minus the length of the main rod, and the surface roughness of the sub-rod is in accordance with that of a conventional planar split combined die core.

4. The process for manufacturing a seamless aluminum pipe using a conventional extruder as recited in claim 1, wherein the outer edge of said projecting cylinder is chamfered at 45 °.

5. The process for producing a seamless aluminum pipe using a conventional extruder as recited in claim 1, wherein the protruding cylindrical chamfer has a width of 2 mm.

6. The process for producing a seamless aluminum pipe using a conventional extruder as recited in claim 1, wherein said projecting cylinder has a height of 20 mm.

7. The process for manufacturing seamless aluminum pipes according to claim 1, wherein the outside diameter of the projecting cylinder is equal to the inside diameter of the container by-0.1 mm.

8. The process for manufacturing seamless aluminum pipes according to claim 7, wherein the extruding cylinder is operated with the extruding cylinder inserted into the inner hole of the spindle case.

Technical Field

The invention relates to the technical field of seamless aluminum pipes, in particular to a processing method for producing a seamless aluminum pipe by using a common extruder.

Background

The seamless aluminum pipe refers to an aluminum pipe without a welding line in the forming process; the seamless aluminum pipe has stronger bearing capacity than a seamed aluminum pipe, uniform texture and bending resistance, and is widely applied to the transmission of high-pressure and corrosive liquids, such as aviation, aerospace, ships, weapons and the like. The production of seamless aluminum pipes has been carried out by a reverse extruder or a forward double-action extruder, using a perforation extrusion method. As most aluminum profile production enterprises do not separately purchase reverse or forward double-acting extruders, the aluminum profile production enterprises can only give up when receiving a seamless aluminum tube production order of a customer. The seamless aluminum pipe produced on a common extruder is a process method which is urgently needed by various aluminum profile production enterprises.

In view of the actual situation, the invention provides a processing method for producing a seamless aluminum pipe by using a common extruder.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide a processing method for producing seamless aluminum pipes by using a common extruder, and seamless aluminum pipes with various specifications can be produced by replacing a special extrusion rod and a matched die on the basis of the common extruder.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the invention provides a processing method for producing a seamless aluminum pipe by using a common extruder, which comprises the following steps:

s1: based on the existing extrusion production line, the extrusion rod and a matched mould are replaced to produce a seamless aluminum pipe;

s2: processing an extrusion rod and a matched die by adopting the inner and outer diameter sizes of the produced seamless aluminum pipe, the stroke of a main cylinder and the size of an inner hole of a spindle container, and simulating a perforation extrusion method;

s3: the extrusion rod comprises a first part main rod and a second part auxiliary rod; the diameter of the main rod except the large diameter part is the same as that of the original extrusion rod, the auxiliary rod and the main rod are integrally processed, and the diameter of the auxiliary rod is equal to the inner diameter of the formed seamless aluminum pipe;

s4: the external diameter of the matched die is the same as that of the original die, the protruding cylinder is arranged, the protruding cylinder and the die main body are processed into a whole, the diameter of the inner hole of the protruding cylinder is + 1% of the external diameter of the formed seamless aluminum tube, and the smoothness of the inner hole of the protruding cylinder is consistent with that of a conventional die working belt; the mould main body is processed into a through hole along the axis of the convex cylinder, and the diameter of the through hole is 8mm larger than the diameter of the inner hole of the convex cylinder;

s5: when producing seamless aluminum tubes, the original extrusion rod is replaced by the extrusion rod of the invention, and the matched mould and hollow aluminum bar are used, and the method is carried out according to a perforation extrusion method.

Preferably, the length of the main rod is equal to the length of an inner hole of the ingot containing barrel, and the top end of the main rod is provided with a 20mm long-diameter part.

Preferably, the length of the secondary rod is 50% of the stroke of the main cylinder minus the length of the main rod, and the surface roughness of the secondary rod is consistent with that of a conventional planar split combined die core head.

Preferably, the protruding cylindrical outer edge is chamfered by 45 °.

Preferably, the protruding cylindrical chamfer has a width of 2 mm.

Preferably, the protruding cylinder is 20mm high.

Preferably, the outer diameter of the protruding cylinder is equal to the diameter of the inner hole of the ingot container, namely 0.1 mm.

Preferably, the protruding cylinder is inserted into the inner hole of the ingot container when the protruding cylinder works.

Compared with the prior art, the invention has the following beneficial effects:

the invention relates to a processing method for producing seamless aluminum tubes by a common extruder, which can produce seamless aluminum tubes of various specifications by replacing a special extrusion rod and a matched die on the basis of the common extruder; the technology has no report and research literature at home and abroad, and belongs to a leading technology.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1.

The processing method for producing the seamless aluminum pipe by the common extruder comprises the following steps:

s1: based on the existing extrusion production line, the extrusion rod and a matched mould are replaced to produce a seamless aluminum pipe;

s2: processing an extrusion rod and a matched die by adopting the inner and outer diameter sizes of the produced seamless aluminum pipe, the stroke of a main cylinder and the size of an inner hole of a spindle container, and simulating a perforation extrusion method;

s3: the extrusion rod comprises a first part main rod and a second part auxiliary rod; the diameter of the main rod except the large diameter part is the same as that of the original extrusion rod, the auxiliary rod and the main rod are integrally processed, and the diameter of the auxiliary rod is equal to the inner diameter of the formed seamless aluminum pipe;

s4: the external diameter of the matched die is the same as that of the original die, the protruding cylinder is arranged, the protruding cylinder and the die main body are processed into a whole, the diameter of the inner hole of the protruding cylinder is + 1% of the external diameter of the formed seamless aluminum tube, and the smoothness of the inner hole of the protruding cylinder is consistent with that of a conventional die working belt; the mould main body is processed into a through hole along the axis of the convex cylinder, and the diameter of the through hole is 8mm larger than the diameter of the inner hole of the convex cylinder;

s5: when producing seamless aluminum tubes, the original extrusion rod is replaced by the extrusion rod of the invention, and the matched mould and hollow aluminum bar are used, and the method is carried out according to a perforation extrusion method.

The mobile jib length of this embodiment equals flourishing spindle section of thick bamboo hole length, and the mobile jib top is equipped with 20mm long thick footpath part.

The length of the auxiliary rod of the embodiment is 50% of the length of the main rod subtracted from the stroke of the main cylinder, and the surface roughness of the auxiliary rod is consistent with that of a conventional plane shunt combined die core head.

The outer edge of the protruding cylinder of this embodiment is chamfered at 45 °.

The protruding cylinder chamfer of this embodiment is 2mm in width.

The protruding cylinder of this embodiment is 20mm high.

The outer diameter of the convex cylinder of the embodiment is equal to the diameter of an inner hole of the ingot containing cylinder, namely 0.1 mm.

When the protruding cylinder works, the protruding cylinder is inserted into the inner hole of the ingot container.

Example 2.

The processing method for producing the seamless aluminum pipe by the common extruder comprises the following steps:

s1: based on the existing extrusion production line, the extrusion rod and a matched mould are replaced to produce a seamless aluminum pipe;

s2: processing an extrusion rod and a matched die by adopting the inner and outer diameter sizes of the produced seamless aluminum pipe, the stroke of a main cylinder and the size of an inner hole of a spindle container, and simulating a perforation extrusion method;

s3: the extrusion rod comprises a first part main rod and a second part auxiliary rod; the diameter of the main rod except the large diameter part is the same as that of the original extrusion rod, the auxiliary rod and the main rod are integrally processed, and the diameter of the auxiliary rod is equal to the inner diameter of the formed seamless aluminum pipe;

s4: the external diameter of the matched die is the same as that of the original die, the protruding cylinder is arranged, the protruding cylinder and the die main body are processed into a whole, the diameter of the inner hole of the protruding cylinder is + 1% of the external diameter of the formed seamless aluminum tube, and the smoothness of the inner hole of the protruding cylinder is consistent with that of a conventional die working belt; the mould main body is processed into a through hole along the axis of the convex cylinder, and the diameter of the through hole is 8mm larger than the diameter of the inner hole of the convex cylinder;

s5: when producing seamless aluminum tubes, the original extrusion rod is replaced by the extrusion rod of the invention, and the matched mould and hollow aluminum bar are used, and the method is carried out according to a perforation extrusion method.

The mobile jib length of this embodiment equals flourishing spindle section of thick bamboo hole length, and the mobile jib top is equipped with 20mm long thick footpath part.

When the protruding cylinder works, the protruding cylinder is inserted into the inner hole of the ingot container.

A special extrusion stem is designed. In order to simulate the perforation extrusion mode, the sizes of the main rod 3 and the auxiliary rod 5 of the special extrusion rod are designed. Closing the ingot containing barrel 9 in place, retreating the main cylinder 1 in place, measuring the distance L between the plane of the flange plate 2 for fixing the extrusion rod and the ingot containing barrel 9, then opening the ingot containing barrel, and measuring the length Lc of the inner hole 8 of the ingot containing barrel and the inner diameter D of the ingot containing barrel 9.

The length of the main rod 3 is Lz, the length of the inner hole 8 of the ingot holding cylinder is Lc, and in order to completely extrude the perforated aluminum bar 7, Lz is Lc; the end of the main rod is designed with a diameter part 4 with a length of 20mm, and the diameter of the diameter part 4 is equal to the diameter D-0.1-0.15 mm of the inner hole 8 of the ingot containing barrel. The large diameter part 4 has the function of fixing the extrusion cake and has the same roughness as the traditional extrusion cake, and the rest part of the main rod 3 has the same diameter as the original extrusion rod.

And (3) setting the length of the auxiliary rod 5 of the special extrusion rod as Lf, obtaining data after the following 5 th item is calculated, wherein the diameter of the auxiliary rod 5 is equal to the inner diameter of the seamless aluminum pipe to be formed, and the surface roughness of the auxiliary rod is equal to that of the original plane shunt combined die core head. In particular, the material and hardness of the main rod 3 and the auxiliary rod 5 of the extrusion rod are the same as those of the original extrusion rod.

Processing a matched mould, wherein the size of a mould main body 13 of the matched mould is the same as that of an original plane shunting mould of the machine, a protruding cylinder 10 is processed at the front end of the mould close to the surface of the ingot containing cylinder, the outer edge of the protruding cylinder is chamfered by 45 degrees and has the width of 2mm, the height of the protruding cylinder 10 is 20mm, the diameter of the outer edge of the protruding cylinder is 0.1mm smaller than that of an inner hole 8 of the ingot containing cylinder, the inner diameter 11 of the protruding cylinder is equal to the outer diameter of a seamless aluminum pipe to be formed and plus 1 percent of the inner hole is equal to a working belt, and the protruding cylinder 10 and the mould main body 13 are integrated; the die body 13 is processed into a through hole 12 along the axis of the projecting cylinder 10, and the diameter of the through hole 12 is 8mm larger than that of the inner hole 11 of the projecting cylinder, which corresponds to the idle position of the die.

The lengths of the sub-rod 5 and the hollow aluminum rod 7 are calculated. The length of the hollow aluminum bar 7 is set to be Lb, so that the safety between the hollow aluminum bar 7 and the auxiliary rod 5 is ensured in order to avoid collision, and the distance between the hollow aluminum bar 7 and the auxiliary rod 5 is set to be 20 mm; lf ≧ Lf is required to be larger or smaller for the sub-rod 5 to be combined with the protruding cylinder 10 into a circular tube mold after passing through the hollow aluminum rod 7

Lb +20mm, since the protruding cylinder 10 is set to a height of 20mm, the following relationship occurs: l ═ LzLc + Lf +20mm + Lb; lf is Lb +20 mm. The following results are obtained by calculation: lf is L-Lc/2;

lb [ [ L-Lc/2] ] -20 mm. The length of the sub-rod 5 and the length of the hollow aluminum rod 7 were determined based on the L, Lc data measured previously.

Then, drilling a through hole in the original solid aluminum rod along the length direction to manufacture a hollow aluminum rod 7, wherein the diameter of the through hole 6 is 5mm plus 2mm of the auxiliary rod, and the outer skin of the original aluminum rod can be turned off according to the requirement.

The original extrusion rod is changed into a special extrusion rod and is aligned with the central axis with the inner hole 8 of the ingot container and the through hole 12 of the matched mould; heating the hollow aluminum bar 7 to 500 +/-20 ℃ in a raw aluminum bar furnace; heating the matched mould to 460 +/-20 ℃ in an original mould furnace.

And extruding on the machine according to a conventional operation mode to continuously produce the seamless aluminum tubes.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.