CN211000297U - Multilayer composite pipe for manufacturing flat bar - Google Patents

Multilayer composite pipe for manufacturing flat bar Download PDF

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Publication number
CN211000297U
CN211000297U CN201921180906.0U CN201921180906U CN211000297U CN 211000297 U CN211000297 U CN 211000297U CN 201921180906 U CN201921180906 U CN 201921180906U CN 211000297 U CN211000297 U CN 211000297U
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Prior art keywords
layer
rolling
pipe
tubular metal
metal resonator
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CN201921180906.0U
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Chinese (zh)
Inventor
李新中
刘钢
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Baoji Special Steel Titanium Industry Co ltd
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Baoji Special Steel Titanium Industry Co ltd
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Abstract

The utility model discloses a compound tubular product of multilayer for making flat rod, including inlayer tubular metal resonator, middle level tubular metal resonator and the outer tubular metal resonator that sets gradually from inside to outside, the more outer tubular metal resonator internal diameter of inlayer tubular metal resonator external diameter is little 0.4mm, the more middle level tubular metal resonator external diameter of inlayer tubular metal resonator is little 0.4 mm. The utility model relates to a multilayer composite pipe for manufacturing flat bars, which has simple structure and convenient rolling; when the composite flat bar with the cross section width to thickness ratio more than or equal to 5 is produced, the original three-layer composite bar rolling is changed into the existing three-layer metal composite pipe rolling, so that the rolling force is greatly reduced, the deformation resistance of the metal in the middle of the cross section is reduced, the deformation uniformity of the metal in the rolling process is improved, the size uniformity of the rolled flat bar is ensured, the surface quality of the rolled flat bar is ensured, and the material yield is improved.

Description

Multilayer composite pipe for manufacturing flat bar
Technical Field
The utility model belongs to the technical field of compound rod, a compound tubular product of multilayer for making flat rod is related to.
Background
The multilayer composite material is applied to metal metallurgy electrodes, electrolytic plating industry and electrochemical industry, and some materials which need to be conductive but corrosion resistant are needed. When the ratio of the width to the thickness of the cross section of the composite material is more than or equal to 5, the cross section of the material is large, the wall thickness is small, the use rigidity is low, in order to improve the rigidity of the specification, the inner core material in the composite material is generally made of carbon steel bars, and in the hot rolling deformation of multi-layer metal with the ratio of the width to the thickness of the cross section of more than or equal to 5, because of the edge effect and the minimum resistance principle, the metal in the middle flows slowly, the metal at the edge part deforms quickly, the upper and lower wide surfaces form convex surfaces, the small surface of the end part cracks, the surface quality of a product is seriously.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a compound tubular product of multilayer for making flat rod has reduced the compound rod of multilayer and has made the rod warp evenly at compound rolling in-process cross section middle part metal material's resistance to deformation.
The utility model adopts the technical scheme that a compound tubular product of multilayer for making flat rod, including inlayer tubular metal resonator, middle level tubular metal resonator and the outer tubular metal resonator that sets gradually from inside to outside.
The utility model is also characterized in that,
the outer diameter of the inner layer metal pipe is 0.2-0.4mm smaller than that of the outer layer metal pipe, and the outer diameter of the inner layer metal pipe is 0.1-0.4mm smaller than that of the middle layer metal pipe.
The inner layer metal pipe, the middle layer metal pipe and the outer layer metal pipe are coaxially arranged.
The utility model has the advantages that:
the utility model relates to a multilayer composite pipe for manufacturing flat bar, which has simple structure and is convenient for rolling the flat bar; in the process of rolling the flat bar by using the rolling mill, the rolling force is greatly reduced, the deformation resistance of metal in the middle of the cross section is reduced when the flat bar is manufactured, the deformation uniformity of the metal in the rolling process is improved, the rolled flat bar is ensured to be accurate in size and good in quality, the metal plasticity is fully exerted, and the material yield is improved.
Drawings
FIG. 1 is a schematic cross-sectional view of a multi-layer composite tube for manufacturing flat bars according to the present invention;
FIG. 2 is a schematic structural diagram of a cross section of a flat bar a manufactured by the multi-layer composite pipe for manufacturing the flat bar according to the present invention;
FIG. 3 is a schematic structural view of a cross section of a prior art three-layer composite rod;
fig. 4 is a structural diagram of a cross section of a flat bar b manufactured by a prior three-layer composite bar.
In the figure, 1 is an inner layer metal pipe, 2 is a middle layer metal pipe, 3 is an outer layer metal pipe, 4 is an inner core bar, 5 is a middle layer pipe, 6 is an outer layer pipe, 7 is an inner layer metal layer a, 8 is a middle layer metal layer a, 9 is an outer layer metal layer a, 10 is an inner layer metal layer b, 11 is a middle layer metal layer b, 12 is an outer layer metal layer b.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model relates to a compound tubular product of multilayer for making flat rod, the structure is as shown in figure 1, including coaxial and from inside to outside inlayer tubular metal resonator 1, middle level tubular metal resonator 2 and the outer tubular metal resonator 3 that sets gradually. The outer diameter of the inner layer metal pipe 1 is 0.2-0.4mm smaller than the inner diameter of the outer layer metal pipe 3, the outer diameter of the inner layer metal pipe 1 is 0.1-0.4mm smaller than the outer diameter of the middle layer metal pipe 2, the size of the outer layer metal pipe 3 is determined according to the size of a flat bar to be manufactured, and the processing amount of the outer layer metal pipe 3 is 20-60%.
Example 1
The embodiment provides a multilayer composite pipe for manufacturing a flat bar, which comprises an inner layer metal pipe 1, a middle layer metal pipe 2 and an outer layer metal pipe 3 which are coaxial and are sequentially arranged from inside to outside. The outer diameter of the inner layer metal pipe 1 is 0.2mm smaller than the inner diameter of the outer layer metal pipe 3, and the outer diameter of the inner layer metal pipe 1 is 0.4mm smaller than the outer diameter of the middle layer metal pipe 2.
Example 2
The embodiment provides a multilayer composite pipe for manufacturing a flat bar, which comprises an inner layer metal pipe 1, a middle layer metal pipe 2 and an outer layer metal pipe 3 which are coaxial and are sequentially arranged from inside to outside. The outer diameter of the inner layer metal pipe 1 is 0.4mm smaller than the inner diameter of the outer layer metal pipe 3, and the outer diameter of the inner layer metal pipe 1 is 0.4mm smaller than the outer diameter of the middle layer metal pipe 2.
Example 3
The embodiment provides a multilayer composite pipe for manufacturing a flat bar, which comprises an inner layer metal pipe 1, a middle layer metal pipe 2 and an outer layer metal pipe 3 which are coaxial and are sequentially arranged from inside to outside. The outer diameter of the inner layer metal pipe 1 is 0.2mm smaller than the inner diameter of the outer layer metal pipe 3, and the outer diameter of the inner layer metal pipe 1 is 0.4mm smaller than the outer diameter of the middle layer metal pipe 2.
Example 4
The embodiment provides a multilayer composite pipe for manufacturing a flat bar, which comprises an inner layer metal pipe 1, a middle layer metal pipe 2 and an outer layer metal pipe 3 which are coaxial and are sequentially arranged from inside to outside. The outer diameter of the inner layer metal pipe 1 is 0.4mm smaller than the inner diameter of the outer layer metal pipe 3, and the outer diameter of the inner layer metal pipe 1 is 0.1mm smaller than the outer diameter of the middle layer metal pipe 2.
Example 5
The embodiment provides a multilayer composite pipe for manufacturing a flat bar, which comprises an inner layer metal pipe 1, a middle layer metal pipe 2 and an outer layer metal pipe 3 which are coaxial and are sequentially arranged from inside to outside. The outer diameter of the inner layer metal pipe 1 is 0.3mm smaller than the inner diameter of the outer layer metal pipe 3, and the outer diameter of the inner layer metal pipe 1 is 0.2mm smaller than the outer diameter of the middle layer metal pipe 2.
The cross section of the flat bar material a finally manufactured by performing multi-pass continuous hot rolling on the multilayer composite pipe material for manufacturing the flat bar material in the embodiment is as shown in fig. 2, and comprises an inner metal layer a, a middle metal layer a and an outer metal layer a which are sequentially wrapped from inside to outside, wherein the inner metal layer a7, the middle metal layer a8 and the outer metal layer a9 respectively correspond to the inner metal pipe 1, the middle metal pipe 2 and the outer metal pipe 3, and it can be seen from fig. 2 that the inner metal pipe 1, the middle metal pipe 2 and the outer metal pipe 3 are not convexly deformed and are uniformly deformed.
The existing three-layer composite bar structure is shown in fig. 3, and comprises an inner core bar 4, a middle layer pipe 5 and an outer layer pipe 6 which are sequentially arranged from inside to outside, the cross section of a flat bar b is finally manufactured through multi-pass continuous hot rolling, and the cross section of the flat bar b is shown in fig. 4 and comprises an inner layer metal layer b, a middle layer metal layer b and an outer layer metal layer b which are sequentially wrapped from inside to outside, the inner layer metal layer b10, the middle layer metal layer b11 and the outer layer metal layer b12 respectively correspond to the inner core bar 4, the middle layer pipe 5 and the outer layer pipe 6, the cross section thickness of the flat bar b is gradually reduced from the middle part to two end parts, and the middle part forms a convex shape, namely, the deformation of the inner core bar 4, the middle layer pipe 5 and the outer layer pipe 6 forms a convex.
For comparison, the utility model relates to a rolling performance of multilayer composite pipe for making flat rod and current three-layer composite rod, adopt a fire to heat many times rolling under the same test condition to carry out the experimental production of flat rod to both the aforesaid, the experimental production specification of flat rod is 110 × 20mm three-layer composite flat rod, the ratio of cross section width and thickness is greater than 5, the inlayer metal level is general carbon steel, the middle level metal level is anaerobic copper, the outer metal level is corrosion-resistant titanium, outer metal layer thickness is 2mm, middle level metal layer thickness is 4mm, inlayer metal layer thickness is 14mm, the processing pass rolling reduction and the surface condition of flat rod are as shown in table 1, wherein A is current three-layer composite rod, B is the utility model relates to a multilayer composite pipe for making flat rod.
Rolling Performance parameters of tables 1A and B
Can see by the surface morphology of two materials in last table, the utility model discloses a compound tubular product of multilayer for making flat rod is than the compound rod of current three-layer, and the resistance to deformation is little in the rolling, and rolling metal deformation is even, and size precision is high.
Can derive through the aforesaid comparison, the utility model relates to a compound tubular product of multilayer for making flat rod, when producing the compound flat rod of ratio more than or equal to 5 of cross section width and thickness, change into the rolling of former compound rod of three-layer the utility model discloses a compound tubular product of multilayer is rolling, when greatly reduced rolling force, the resistance to deformation of cross section middle part metal when having reduced and making flat rod has improved the deformation uniformity of metal in rolling process, has greatly guaranteed the production quality of flat rod.

Claims (2)

1. The utility model provides a compound tubular product of multilayer for making flat rod, its characterized in that includes inlayer tubular metal resonator (1), middle level tubular metal resonator (2) and outer tubular metal resonator (3) that set gradually from inside to outside, inlayer tubular metal resonator (1) external diameter is less than 0.4mm than outer tubular metal resonator (3) internal diameter, inlayer tubular metal resonator (1) external diameter is less than 0.4mm than middle level tubular metal resonator (2) external diameter.
2. A multilayer composite tube for manufacturing flat bars according to claim 1, characterized by the fact that the inner (1), middle (2) and outer (3) metal tubes are coaxially arranged.
CN201921180906.0U 2019-07-25 2019-07-25 Multilayer composite pipe for manufacturing flat bar Active CN211000297U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921180906.0U CN211000297U (en) 2019-07-25 2019-07-25 Multilayer composite pipe for manufacturing flat bar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921180906.0U CN211000297U (en) 2019-07-25 2019-07-25 Multilayer composite pipe for manufacturing flat bar

Publications (1)

Publication Number Publication Date
CN211000297U true CN211000297U (en) 2020-07-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921180906.0U Active CN211000297U (en) 2019-07-25 2019-07-25 Multilayer composite pipe for manufacturing flat bar

Country Status (1)

Country Link
CN (1) CN211000297U (en)

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