CN110132839A - Base of the one kind for composite bimetal pipe covers pipe interface bond strength testing mould and method - Google Patents
Base of the one kind for composite bimetal pipe covers pipe interface bond strength testing mould and method Download PDFInfo
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- CN110132839A CN110132839A CN201910315894.6A CN201910315894A CN110132839A CN 110132839 A CN110132839 A CN 110132839A CN 201910315894 A CN201910315894 A CN 201910315894A CN 110132839 A CN110132839 A CN 110132839A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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Abstract
The invention discloses a kind of bases for composite bimetal pipe to cover pipe interface bond strength testing mould and method, is related to material properties test field, including cope plate and lower die holder；It is oriented to and is connected by guide post between the cope plate and lower die holder；Upper die holder is installed on the cope plate, formed punch cutter block is installed on upper die holder, the lower die edge of a knife is provided in the lower die holder；Lower die edge of a knife center offers stepped hole；The formed punch cutter block outer diameter covers that pipe outer tube diameter is identical with base, has the internal diameter in hole formed punch cutter block outer diameter engaged therewith identical in the stepped hole in the lower die edge of a knife.Formed punch cutter block and upper die holder are detachably connected, and can only be replaced to formed punch cutter block, and the lower die edge of a knife uses the more knife-edge designs of a mould, and a lower die edge of a knife can carry out compression shear experiment to a variety of samples, and operation is easy, and significantly reduces cost；The quantity of mould parts is few, and structure is simple, and operation and maintenance is convenient, the long service life of mold.
Description
Technical field
The present invention is material properties test field, and in particular to a kind of compression shear mold is arrived, it can quickly, accurately using the mold
The base that composite bimetal pipe is completed on ground covers the testing mould and method of pipe interface bond strength.
Background technique
Composite bimetal pipe is a kind of special tubes, passes through various modifications and connection skill by the metal tube of two layers of unlike material
Art is combined closely.One layer of tubing is usually relatively thick, plays carrier function, is referred to as " base tube "；Another layer of tubing phase
To relatively thin, cladding or liner are referred to as " covering pipe " on base tube.Composite bimetal pipe can integrate the mechanical property of bi-material layers
Advantage, and valuable metal resource is saved, it has broad application prospects.Composite bimetal pipe apply and secondary modeling
When property working research, base covers pipe interface bond strength and is very important analysis parameter, and the acquisition of this parameter is pressed
Scissor test, and need using dedicated compression shear mold.When base, cover that pipe interface bond strength is higher, especially metallurgical bonding is double
Metal composite pipe is easy to produce biggish plastic deformation in compression shear test process, and compression shear mold is to guiding, positioning accuracy
More demanding, punch-pin configuration design should also be conducive to reduce base when testing, cover plastic deformation caused by pipe separation.In addition, pressure
When cutting test, the bimetal tube of different bores needs various sizes of compression shear mold cooperation, in order to reduce experimental cost, compression shear
The formed punch cutter block of mold, the lower die edge of a knife should have convenient replacing or be applicable in the ability of more size change overs.But current above-mentioned skill
Art requires not to be able to satisfy.
Summary of the invention
To solve the problems, such as one or more in above-mentioned, the present invention provides one kind to be used for composite bimetal pipe
The mold and method of interface bond strength test, the mold are directed to the bimetal tube of different dimensions, can quickly convert
Formed punch cutter block, meanwhile, cooperation has the lower die edge of a knife of multi-step slot, efficiently carries out compression shear experiment；The device has positioning
Bracket opens up pilot hole on bracket, can be oriented to the stroke of punch-pin, positioning, has that guiding accuracy is high, positioning accuracy is high, knot
Base when structure is simple, long service life, configuration design are conducive to reduce test covers the features such as plastic deformation caused by pipe separation, when
Base, cover pipe interface bond strength it is higher when, compression shear test when sample can generate extrusion deformation, therefore the ladder outer circle of formed punch cutter block
Surface uses arc transition.
A kind of mold for the test of composite bimetal pipe interface bond strength, including cope plate and lower die holder；On described
It is oriented to and is connected by guide post between template and lower die holder；Upper die holder is installed on the cope plate, formed punch is installed on upper die holder
Cutter block is provided with the lower die edge of a knife in the lower die holder；Lower die edge of a knife center offers stepped hole；The formed punch cutter block outer diameter
It covers that pipe outer tube diameter is identical with base, there is the internal diameter in hole formed punch cutter block outer diameter engaged therewith in the stepped hole in the lower die edge of a knife
It is identical.
Further, the formed punch cutter block includes first axle and the second axis from top to bottom；First shaft diameter is greater than the
Two shaft diameters；And the diameter of first axle is equal to base and covers pipe outer tube diameter.
Further, the lower die edge of a knife is T-shaped structure.
Further, the stepped hole at lower die edge of a knife center has several layers.
Further, the formed punch cutter block is connected through a screw thread with upper die holder, can be covered according to base pipe size replace it is different
Formed punch cutter block.
Further, arc-shaped transition is used between the first axle and the second axis.
Base for composite bimetal pipe covers pipe interface bond strength test method, includes the following steps:
Step 1: covering the hole B in the stepped hole of the pipe outer tube diameter selection lower die edge of a knife identical with its internal diameter according to base, and
The diameter dimension adjacent with hole B is greater than the hole A of hole B；Base is covered pipe to be placed in the hole A of the corresponding lower die edge of a knife, hole A covers pipe to base
It is tentatively constrained, selection is covered the identical formed punch cutter block of pipe outer tube diameter size with base and is mounted on upper die holder；
Step 2: formed punch cutter block moves downward, and the arcuate structure of the second multi-diameter shaft can gradually cover at bore with base to be contacted,
Pipe is covered to base and plays further constraint, makes that base covers the internal diameter of pipe outer tube and hole B inner wall coincides；
Step 3: formed punch cutter block continues to move downward, and the first multi-diameter shaft of formed punch cutter block is matched with the hole B of the lower die edge of a knife
Sample is sheared vertically, until the base tube that base covers pipe is separated with pipe is covered, passes through the available stress-displacement of universal testing machine
Curve graph.
This practical fast mold exchange have the advantage that and the utility model has the advantages that
1, formed punch cutter block and upper die holder are detachably connected, and can only be replaced to formed punch cutter block, the lower die edge of a knife uses one
The more knife-edge designs of mould, a lower die edge of a knife can carry out compression shear experiment to a variety of samples, and operation is easy, significantly reduces into
This；
2, guide post be connected through a screw thread assembly on the lower die seat, cooperated with the pilot hole on upper cover plate, rise guiding and
The effect of positioning；
3, formed punch cutter block and the lower die edge of a knife are oriented to and are positioned using cylinder contacts face, with the progress that compression shear is tested,
It is increasing to apply load, and it is also increasing to be oriented to contact surface, thus guiding accuracy is high, while cavity plate and the accurate of punch-pin are matched
Conjunction can be effectively protected the shearing edge of a knife；
4, the transition arc radius that the second axis of formed punch cutter block has is reasonable, can reduce test when base, cover pipe separation cause
Plastic deformation, while auxiliary positioning can also be played the role of；
5, the quantity of mould parts is few, and structure is simple, and operation and maintenance is convenient, the long service life of mold.
6. formed punch cutter block is Ke Kuaisugenghuan, the lower die edge of a knife uses ladder aperture design, can place the sample of more bores, because
The base that this set of fast mold exchange can conveniently and efficiently carry out different bores covers the test of pipe interface bond strength, greatly reduces
Experimental cost.
7. formed punch cutter block and the lower die edge of a knife are oriented to and are positioned using cylinder contacts face, with the progress that compression shear is tested,
It is higher and higher to apply load, and it is also increasing to be oriented to contact surface, thus guiding accuracy is high.
8. the accurate cooperation of punch-pin and cavity plate can be effectively protected the shearing edge of a knife.Second axis of formed punch cutter block is closed with radius
The excessive circular of reason can reduce base when testing, cover plastic deformation caused by pipe separation, while can also play the work of auxiliary positioning
With.
Detailed description of the invention
Fig. 1 is the assembling schematic diagram of interface bond strength testing mould of the present invention.
Fig. 2 is the formed punch cutter block structural schematic diagram in Fig. 1 of the present invention.
Fig. 3 is the lower die edge of a knife cross-sectional view in Fig. 1 of the present invention.
Fig. 4 is the structure of upper die base schematic diagram in Fig. 1 of the present invention.
Fig. 5 is the upper cover plate structural schematic diagram in Fig. 1 of the present invention.
Fig. 6 is the Lower die base structure schematic diagram in Fig. 1 of the present invention.
Fig. 7 is the guide post structure schematic diagram in Fig. 1 of the present invention.
Appended drawing reference is as follows:
1- upper die holder；2- upper cover plate；3- formed punch cutter block；4- lower die holder；The 5- lower die edge of a knife；6- guide post；3-1 first axle；3-2
Second axis；The first hole 5-1；The second hole 5-2.
Specific embodiment
Present invention will be further explained with reference to the attached drawings and specific examples:
A kind of mold for the test of composite bimetal pipe interface bond strength, including cope plate 2 and lower die holder 4；It is described
Pass through the guiding connection of guide post 6 between cope plate 2 and lower die holder 4；Upper die holder 1 is installed on the cope plate 2, is pacified on upper die holder 1
Equipped with formed punch cutter block 3, the lower die edge of a knife 5 is provided in the lower die holder 4；5 center of the lower die edge of a knife offers stepped hole；It is described
3 outer diameter of formed punch cutter block covers that pipe outer tube diameter is identical with base, has the internal diameter in a hole to cooperate in the stepped hole in the lower die edge of a knife 5 with it
3 outer diameter of formed punch cutter block it is identical.
Further, the formed punch cutter block 3 includes first axle 3-1 and the second axis 3-2 from top to bottom；The first axle 3-1
Diameter is greater than the second axis 3-2 diameter；And the diameter of first axle 3-1 is equal to base and covers pipe outer tube diameter.
Further, the lower die edge of a knife 5 is T-shaped structure.
Further, the stepped hole at 5 center of the lower die edge of a knife has several layers.
Further, the formed punch cutter block 3 is connected through a screw thread with upper die holder 1, and it is different that pipe size replacement can be covered according to base
Formed punch cutter block 3.
Further, arc-shaped transition is used between the first axle 3-1 and the second axis 3-2.
Base for composite bimetal pipe covers pipe interface bond strength test method, includes the following steps:
Step 1: covering the hole B in the stepped hole of the pipe outer tube diameter selection lower die edge of a knife 5 identical with its internal diameter according to base,
The diameter dimension adjacent with hole B is greater than the hole A of hole B；Base is covered pipe to be placed in the hole A of the corresponding lower die edge of a knife 5, hole A is to base
It covers pipe tentatively to be constrained, selection is covered the identical formed punch cutter block 3 of pipe outer tube diameter size with base and is mounted on upper die holder 1；
Step 2: formed punch cutter block 3 moves downward, and the arcuate structure of the second multi-diameter shaft 3-2 can gradually cover at bore with base
Contact, covers pipe to base and plays further constraint, makes that base covers the internal diameter of pipe outer tube and hole B inner wall coincides；
Step 3: formed punch cutter block 3 continues to move downward, the first multi-diameter shaft 3-1 of formed punch cutter block 3 and the hole B of the lower die edge of a knife 5
Match and sample sheared vertically, until base covers the base tube of pipe and separates with pipe is covered, by universal testing machine it is available by
Force-displacement curve figure.
Pilot hole is offered on cover board 1, can cooperate with upper die holder 1 and be positioned.Formed punch cutter block 3 is connected through a screw thread dress
On upper die holder 1, it is fixed that formed punch cutter block 3 can play auxiliary according to size requirements quick-replaceable, the arcuate structure of formed punch cutter block 3
Position effect, guarantees the accuracy of experiment.Stepped hole is offered on lower die holder 4, assembles the lower die edge of a knife 5, the lower die edge of a knife on T-shaped hole
5 open up stepped hole, and ladder bore dia uses Seriation Design, can assemble various sizes of compression shear sample within the scope of certain size.
Guide post 6, which is connected through a screw thread, to be assemblied on lower die holder 4, is cooperated with the pilot hole on upper cover plate 2, and the work of guiding and positioning is played
With.
3 shape of formed punch cutter block is multi-diameter shaft, including first axle 3-1 and second axis 3-2 two parts, along multi-diameter shaft axis
The size in direction is respectively h, f.Multi-step hole is offered in the lower die edge of a knife 5, can use phase for various sizes of sample
Two layers of progress compression shear experiment even, to be illustrated in the connected stepped hole of one pair of them, including the first hole 5-1, the second hole 5-2
Two parts, the size along stepped hole axis direction are respectively k, m.Suggest that there are the following size relationships: h >=k+ when design
5mm,f≤m.Bimetal tube compression shear specimen length s suggests k >=s when design.
The first axle 3-1 diameter of formed punch cutter block 3 and the base of composite bimetal pipe cover area within a jurisdiction face junction diameter it is identical i.e. with
It is identical that base covers pipe outer tube diameter, and when design uses into body principle dimensioning tolerance.First hole 5-1 diameter of the lower die edge of a knife 5 etc.
With the outer diameter of composite bimetal pipe, the base that the second hole 5-2 diameter is equal to composite bimetal pipe covers area within a jurisdiction face junction diameter,
Equally use body principle dimensioning tolerance when design.If the upper and lower end face of clocking requirement lower die holder 4 and the lower die edge of a knife 5 exists
Depth of parallelism requirement, there are verticality requirements with axially bored line for bottom face.Formed punch cutter block 3 and 5 axis phase of the lower die edge of a knife are required when assembly
It is overlapped.
3 second axis 3-1 connecting shaft body end of formed punch cutter block has arc transition, the size of arc radius R and the second end axis 3-2
Diameter of axle d is held to there is association, d should be less than bimetal tube internal diameter when design, and the size of R can carry out excellent according to Simulation results
Change.
It need to be heat-treated at 5 sheared edge of the formed punch cutter block 3 and the lower die edge of a knife to guarantee its hardness.
It is identical that the first axle 3-1 diameter of formed punch cutter block 3 and the base of composite bimetal pipe cover area within a jurisdiction face junction diameter, design
Shi Caiyong enters body principle dimensioning tolerance.The connected stepped hole of any two of the lower die edge of a knife 5, which all can serve as the lower die edge of a knife, to be made
With with wherein one group of data instance, the first hole 5-1 diameter is equal to the outer diameter of composite bimetal pipe, the second hole 5-2 diameter etc.
Base with composite bimetal pipe covers area within a jurisdiction face junction diameter, equally using entering body principle dimensioning tolerance when design.Punch-pin
The second axis 3-2 connecting shaft body end have the reasonable arc transition of radius.
When carrying out compression shear experiment, bimetal tube is placed in the first hole 5-1 of the lower die edge of a knife 5, at this moment upper mold
Make the axis of formed punch cutter block 3 and the lower die edge of a knife 5 on same straight line by the cooperation of guide post 6 with lower die, the downward telemechanical of upper mold, punching
The second hole 5-2 mutual cooperation of the first multi-diameter shaft 3-1 and the lower die edge of a knife 5 of head cutter block 3 carry out multiple tube to cut pressure, until compound
Pipe base tube is separated with pipe is covered.
Embodiment described above is the preferred embodiments of the present invention, but present invention is not limited to the embodiments described above,
The fast mold exchange substantive content of pipe interface bond strength test is being covered without departing substantially from the base for composite bimetal pipe of the invention
In the case of, those skilled in the art's any obvious improvements, substitutions or variations that can be made belongs to the present invention and is used for
The base of composite bimetal pipe covers the protection scope of the fast mold exchange of pipe interface bond strength test.
Claims (7)
1. base of the one kind for composite bimetal pipe covers pipe interface bond strength testing mould, which is characterized in that including cope plate
(2) and lower die holder (4)；Pass through the connection of guide post (6) guiding between the cope plate (2) and lower die holder (4)；The cope plate (2)
On be equipped with upper die holder (1), be equipped on upper die holder (1) formed punch cutter block (3), be provided with the lower die edge of a knife in the lower die holder (4)
(5)；The lower die edge of a knife (5) center offers stepped hole；It is identical that formed punch cutter block (3) outer diameter and base cover pipe outer tube diameter,
There is the internal diameter in hole formed punch cutter block (3) outer diameter engaged therewith identical in stepped hole in the lower die edge of a knife (5).
2. the base according to claim 1 for composite bimetal pipe covers pipe interface bond strength testing mould, feature
It is, the formed punch cutter block (3) includes first axle (3-1) and the second axis (3-2) from top to bottom；First axle (3-1) diameter
Greater than the second axis (3-2) diameter；And the diameter of first axle (3-1) is equal to base and covers pipe outer tube diameter.
3. the base according to claim 1 for composite bimetal pipe covers pipe interface bond strength testing mould, feature
It is, the lower die edge of a knife (5) is T-shaped structure.
4. the base according to claim 1 for composite bimetal pipe covers the mold of pipe interface bond strength test, special
Sign is that the stepped hole at the lower die edge of a knife (5) center has several layers.
5. the base according to any one of claims 1 to 4 for composite bimetal pipe covers pipe interface bond strength test mould
Tool, which is characterized in that the formed punch cutter block (3) is connected through a screw thread with upper die holder (1), and it is different that pipe size replacement can be covered according to base
Formed punch cutter block (3).
6. the base according to claim 2 for composite bimetal pipe covers pipe interface bond strength testing mould, feature
It is, arc-shaped transition is used between the first axle (3-1) and the second axis (3-2).
7. the base for composite bimetal pipe covers pipe interface bond strength test method, which comprises the steps of:
Step 1: covering the hole B in the stepped hole of the pipe outer tube diameter selection lower die edge of a knife (5) identical with its internal diameter according to base, and
The diameter dimension adjacent with hole B is greater than the hole A of hole B；Base is covered pipe to be placed in the hole A of the corresponding lower die edge of a knife (5), hole A is to base
It covers pipe tentatively to be constrained, selection is covered the identical formed punch cutter block (3) of pipe outer tube diameter size with base and is mounted on upper die holder (1)；
Step 2: formed punch cutter block (3) moves downward, and the arcuate structure of the second multi-diameter shaft (3-2) can gradually cover at bore with base
Contact, covers pipe to base and plays further constraint, makes that base covers the internal diameter of pipe outer tube and hole B inner wall coincides；
Step 3: formed punch cutter block (3) continues to move downward, the first multi-diameter shaft (3-1) of formed punch cutter block (3) and the lower die edge of a knife (5)
Hole B match sample sheared vertically, until the base tube that base covers pipe is separated with pipe is covered, can be obtained by universal testing machine
To by force-displacement curve figure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910315894.6A CN110132839A (en) | 2019-04-19 | 2019-04-19 | Base of the one kind for composite bimetal pipe covers pipe interface bond strength testing mould and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910315894.6A CN110132839A (en) | 2019-04-19 | 2019-04-19 | Base of the one kind for composite bimetal pipe covers pipe interface bond strength testing mould and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110132839A true CN110132839A (en) | 2019-08-16 |
Family
ID=67570388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910315894.6A Pending CN110132839A (en) | 2019-04-19 | 2019-04-19 | Base of the one kind for composite bimetal pipe covers pipe interface bond strength testing mould and method |
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| CN (1) | CN110132839A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112229794A (en) * | 2020-10-12 | 2021-01-15 | 湘潭大学 | Device for measuring bonding strength of laser cladding repair layer |
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| CN112229794A (en) * | 2020-10-12 | 2021-01-15 | 湘潭大学 | Device for measuring bonding strength of laser cladding repair layer |
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