CN106286504A - A kind of Combined desk is with connecting support - Google Patents
A kind of Combined desk is with connecting support Download PDFInfo
- Publication number
- CN106286504A CN106286504A CN201610774072.0A CN201610774072A CN106286504A CN 106286504 A CN106286504 A CN 106286504A CN 201610774072 A CN201610774072 A CN 201610774072A CN 106286504 A CN106286504 A CN 106286504A
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- powder
- rack body
- particle diameter
- combined desk
- copper
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- 230000037237 body shape Effects 0.000 claims abstract description 7
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 7
- 239000010432 diamond Substances 0.000 claims abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 73
- 239000010949 copper Substances 0.000 claims description 73
- 239000002245 particle Substances 0.000 claims description 70
- 229910052802 copper Inorganic materials 0.000 claims description 61
- 239000003795 chemical substances by application Substances 0.000 claims description 45
- 239000011159 matrix material Substances 0.000 claims description 35
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 28
- 229910001339 C alloy Inorganic materials 0.000 claims description 23
- 238000001764 infiltration Methods 0.000 claims description 23
- 230000008595 infiltration Effects 0.000 claims description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 18
- 239000000314 lubricant Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 238000004663 powder metallurgy Methods 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 12
- 238000000465 moulding Methods 0.000 claims description 10
- 239000011812 mixed powder Substances 0.000 claims description 9
- 229910052750 molybdenum Inorganic materials 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 5
- 229910052796 boron Inorganic materials 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 240000006409 Acacia auriculiformis Species 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 19
- 238000005245 sintering Methods 0.000 description 15
- 238000009413 insulation Methods 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 230000001939 inductive effect Effects 0.000 description 9
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 6
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 150000004767 nitrides Chemical class 0.000 description 6
- 238000009826 distribution Methods 0.000 description 5
- 239000011651 chromium Substances 0.000 description 4
- 239000007791 liquid phase Substances 0.000 description 4
- 239000011572 manganese Substances 0.000 description 4
- 239000011701 zinc Substances 0.000 description 4
- 229910052748 manganese Inorganic materials 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000289 melt material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/0004—Joining sheets, plates or panels in abutting relationship
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention provides a kind of Combined desk and connect support, belong to connector technical field；It solve existing connection support to be applicable to unconventional connection angle and cause the relatively low technical problem of desk intensity；A kind of Combined desk is with connecting support, including rack body, rack body assumes diamond in shape body shape, it has upper surface, lower surface, left surface, right flank, front end face and rear end face, the middle part of rack body offers installing hole, installing hole runs through the two ends of rack body and installing hole and extends respectively to upper surface and lower surface, it is respectively arranged with the most horizontal-extending block with the middle part having side at left surface, the projection of shape of block is rhombus, is respectively formed with two spacing breach between two blocks and left surface and right flank；The global shape of this structure assumes diamond in shape body shape, it is adaptable to unconventional connection angle, and two boards is limited and prevents plate from moving the most easily by spacing breach respectively, improves the intensity after desk is installed.
Description
Technical field
The invention belongs to connector technical field, relate to a kind of Combined desk and connect support.
Background technology
Office appliance is developed so far, and has presented convenient transport, the trend, especially desk and office such as easy to assemble
Chair, when dispatching from the factory and transport, be stacked together packaging by several blocks of plates of composition desk or office chair, waits after being transported to destination,
By the way of assembling, many allegros are assembled into desk or office chair again, and when assembling, it usually needs use connection support.
There is techniques below problem in existing connection support, it is only used for connecting the plate of conventional angle, such as 90 degree or
Person 180 degree, for the angle between plate and plate less than 90 degree in the case of, this connection support then cannot use, it addition, desk and
Office chair is generally in use easily deformed by external force, and the connection support of routine can only play common interconnection function,
When external force is bigger, connects support and cannot avoid desk or office chair deformation or fall apart, so, cause desk or office chair
Intensity is relatively low.
In sum, in order to solve the technical problem that above-mentioned connection support exists, need to design one and be applicable to unconventional
Connection angle and can improve desk intensity Combined desk connect support.
Summary of the invention
It is an object of the invention to the problems referred to above existed for prior art, it is proposed that one is applicable to unconventional joint angle
Spend and can improve the Combined desk connection support of desk strength.
The purpose of the present invention can be realized by following technical proposal: a kind of Combined desk connects support, including
Rack body, described rack body assumes diamond in shape body shape, its have upper surface, lower surface, left surface, right flank, front end face with after
End face, the middle part of described rack body offers installing hole, and described installing hole runs through the two ends of rack body and installing hole respectively
Extend to upper surface and lower surface, be respectively arranged with the most horizontal-extending block at left surface and the middle part having side, described
The projection of shape of block is rhombus, is respectively formed with two spacing breach between two blocks and left surface and right flank；
Wherein, described rack body is made up of powder metallurgy sintered steel.
In above-mentioned a kind of Combined desk connection support, described upper surface and lower surface are respectively arranged with and are positioned at
The reaming at installing hole two ends, the aperture of described reaming is gradually increased with lower surface to upper surface by the end of installing hole.
Connect in support at above-mentioned a kind of Combined desk, arrange between the surface of described block and the lateral wall of block
There is an inclined-plane.
Connect in support at above-mentioned a kind of Combined desk, between described block sidewall and block end face, be provided with arc
Angle.
Connecting in support at above-mentioned a kind of Combined desk, described powder metallurgy sintered steel is mainly by following quality hundred
Proportion by subtraction becomes to be grouped into: C:0.3-0.8%, Cu:8-14.9%, element M ＜ 2%, Fe: surplus.
In above-mentioned a kind of Combined desk connection support, described element M be the one in Mn, B, Cr, Mo, Zn or
Multiple.
Connecting in support at above-mentioned a kind of Combined desk, described powder metallurgy sintered steel is with Fe-Cu-C alloy
For matrix, copper seeping agent is used to carry out molten oozing process and preparing.
Connecting in support at above-mentioned a kind of Combined desk, described Fe-Cu-C alloy substrate is by water-atomized iron powder, copper
Powder and graphite powder are made through mixed powder, molding；Wherein, mass percent 3-5.5% of Cu in Fe-Cu-C alloy substrate.
Connecting in support at above-mentioned a kind of Combined desk, described copper seeping agent is become packet by following mass percent
Become: iron powder: 1.87-2.15%, element M powder≤10%, lubricant L T.LT.LT 0.5%, copper powder: surplus.
Connecting in support at above-mentioned a kind of Combined desk, the particle diameter of described copper seeping agent is distributed as: particle diameter≤50 μm:
5-25%, 50 ＜ particle diameter≤100 μm: 70-90%, particle diameter ＞ 100 μm: 1-5%.
Rack body of the present invention is made up of powder metallurgy sintered steel, and low cost, processing are efficiently.But, employing routine compacting-
The powder metallurgy sintered steel bracket body of sintering process manufacture can not reach complete densifie state in pressing process, and density is relatively
Low, in rack body, the hole of residual makes the mechanical properties such as the fracture toughness of rack body, tensile strength, hardness dynamic
Mechanical property (impact flexibility, fatigue strength) is far below into and is grouped into identical melt material, causes it can not meet use need
Ask.Therefore, the present invention by copper infiltration, eliminates the residual porosity of powder metallurgy sintered steel bracket body thus obtains high cause again
Density, high performance rack body.
The copper infiltration that the present invention uses is the matrix skeleton that the preforming pressed compact made by copper seeping agent is placed in rack body
On, when heating-up temperature exceedes the fusing point of copper seeping agent, copper seeping agent forms liquid phase, in the matrix skeleton of copper seeping agent Yu rack body
Under the effect of intergranular capillary force, liquid phase is penetrated into and the hole of filling connection, thus obtains high-compactness, high performance support originally
Body.
The matrix skeleton of rack body of the present invention is Fe-Cu-C alloy, and is mixed by water-atomized iron powder, copper powder and graphite warp
Powder, molding are made；Wherein, mass percent 3-5.5% of Cu in Fe-Cu-C alloy substrate.Matrix skeleton is to finally oozing at copper
Performance impact after reason is very big, and the raw material compressibility of matrix skeleton of the present invention is good, and the Fe-Cu-C alloy substrate skeleton after compacting inclines
To forming the hole or channel system interconnected, few without airtight hole more, and, matrix skeleton with the addition of a small amount of copper and make
For inducing metal.Therefore, the copper seeping agent of liquid phase can penetrate into and the hole of filling connection more preferably, faster, thus obtains high cause
Density, high performance rack body.
After melting due to fine copper, the contact surface corroding copper seeping agent and matrix skeleton metal is formed groove mark and affects product
Product surface quality.Therefore, in order to prevent corroding, the copper seeping agent of the present invention is an Albatra metal, adds appropriate in copper powder
Iron powder makes itself and copper alloy, reaches to be substantially saturated so that first the ferrum in copper seeping agent dissolve each other with copper, then with melted alloy
Liquid penetrates in matrix hole, makes the most corrosion-free also noresidue of matrix surface.But, if the content control of iron powder is improper, it is less than
During above-mentioned scope, there is corrosion but noresidue in matrix surface, and during higher than above-mentioned scope, although matrix surface is corrosion-free but can go out
Now remain, so the control of the addition of iron powder is the most extremely important.
It addition, the present invention also with the addition of trace element M and lubricant in copper seeping agent, corrosion phenomenon and wet both can be improved
Lubricant nature, can improve again the performance of rack body.Wherein, one or more during element M is Mn, B, Cr, Mo, Zn.Mn also may be used
With with copper alloy, reduce liquid phase surface tension, remove the residue oozed after copper, reduce and corrode, it is also possible to improve mechanical property；B
Raising density, intensity and the effect of toughness can be played；Cr with Mo can become the cementite of carbide and alloy with C-shaped, plays
Improve the effect of hardness；Zn can play reduction copper seeping agent melt viscosity, increases the effect of its activity.
The present invention further defines the particle diameter distribution of copper seeping agent, this even particle size distribution, and the grain of copper seeping agent of the present invention
Footpath is less than the particle diameter of matrix skeleton raw material, and therefore, the consistency of the rack body of formation is more preferable.
Compared with prior art, the method have the advantages that
1. the global shape of this structure assumes diamond in shape body shape, and it is applicable to unconventional connection angle, meanwhile, rack body two
The spacing breach that side is formed so that this rack body is also applied for the company between the most parallel two boards
Connecing, its suitability is stronger.
2., when installing, the two boards being connected is respectively placed in the spacing breach of rack body both sides, while connection, and limit
Position breach two boards is limited respectively and prevents plate from moving the most easily, thus improve desk install after strong
Degree.
Rack body the most of the present invention is made up of powder metallurgy sintered steel, and low cost, processing are efficiently.
Rack body the most of the present invention through copper infiltration, eliminate the residual porosity of powder metallurgy sintered steel bracket body from
And obtain high-compactness, high performance rack body.
Accompanying drawing explanation
Fig. 1 is the top-plan view of the present invention.
Fig. 2 is the lower surface plane graph of the present invention.
Fig. 3 is the elevation of the rear end face of the present invention.
In figure, 10, rack body；11, upper surface；12, lower surface；13, left surface；14, right flank；15, front end face；
16, rear end face；17, installing hole；17a, reaming；20, block；21, spacing breach；22, inclined-plane；23, arc angle.
Detailed description of the invention
The following is the specific embodiment of the present invention and combine accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
As shown in Figure 1 to Figure 3, one Combined desk of the present invention connects support, including rack body 10.
Rack body 10 assumes diamond in shape body shape, and it has upper surface 11, lower surface 12, left surface 13, right flank 14, front end face
15 with rear end face 16, the middle part of described rack body 10 offers installing hole 17, and this installing hole 17 is for connecting what needs were fixed
Two boards, installing hole 17 runs through the two ends of rack body 10 and installing hole 17 and extends respectively to upper surface 11 and lower surface 12.
The most horizontal-extending block 20, the throwing of described block 20 it is respectively arranged with at left surface 13 and the middle part having side
Shadow is shaped as rhombus, is respectively formed with two spacing breach 21, spacing breach between two blocks 20 and left surface 13 and right flank 14
21 move for accommodating the fixing plate of needs and restriction plate.
The present invention uses said structure, global shape to assume diamond in shape body shape, and it is applicable to unconventional connection angle, meanwhile,
The spacing breach 21 that rack body 10 both sides are formed so that this rack body 10 is also applied for the most parallel
Connection between two boards, its suitability is relatively strong, it addition, the two boards being connected is respectively placed in the spacing of rack body 10 both sides
In breach 21, while connection, two boards is limited and prevents plate from moving the most easily by spacing breach 21 respectively, thus
Improve the intensity after desk is installed.
It, on the basis of said structure, has been done further improvement by the present invention.
As improvement, described upper surface 11 is respectively arranged with, on lower surface 12, the reaming 17a being positioned at installing hole 17 two ends,
The aperture of described reaming 17a is gradually increased with lower surface 12 to upper surface 11 by the end of installing hole 17, by arranging reaming
17a, during convenient installation, screw enters in installing hole 17, and after installing, the conical nose of screw can complete and reaming 17a
Agree with mutually so that screw maintains an equal level with upper surface 11 or the lower surface 12 of rack body 10, thus avoids screw to expose.
As improvement, being provided with an inclined-plane 22 between the surface of described block 20 and the lateral wall of block 20, inclined-plane 22 has
Certain guide effect, facilitates and needs fixing plate to contact with the surface of block 20 faster, thus it is faster to facilitate plate
Enter in spacing breach 21.
As improvement, between described block 20 sidewall and block 20 end face, it is provided with arc angle 23, setting of arc angle 23
Put so that during installation, be difficult to human body scratch when block 20 and human contact.
The rack body 10 of the present invention is made up of powder metallurgy sintered steel.Following example with Fe-Cu-C alloy as matrix,
Use copper seeping agent to carry out molten oozing and process prepared rack body 10.
Embodiment 1:
Fe-Cu-C alloy is made less than the water-atomized iron powder of 150 μm, copper powder and graphite powder through mixed powder, molding with particle diameter
The matrix skeleton of rack body, wherein, the mass percent 4% of inducing metal Cu, the matter of C in Fe-Cu-C alloy substrate skeleton
Amount percentage ratio is 0.3%.
By the iron powder of 1.87%, the zinc powder of 2%, the manganese powder of 1%, the boron powder of 1.5%, the chromium powder of 2%, the molybdenum powder of 1%,
The lubricant of 0.3%, the mass percent of surplus copper powder is configured to copper seeping agent preforming pressed compact, and the particle diameter of copper seeping agent is distributed as:
Particle diameter≤50 μm: 12%, 50 ＜ particle diameter≤100 μm: 85%, particle diameter ＞ 100 μm: 3%.
Then remove oxide and the nitride film on matrix skeleton surface, copper seeping agent preforming pressed compact is placed in matrix skeleton
Top, is placed in stove and is sintered infiltration simultaneously.Sintering and infiltration technique is: at 750 DEG C of insulation 15min with burn off lubricant,
1020 DEG C of insulation 15min are to dissolve graphite powder, then at 1130 DEG C of sintering infiltration 22min, make the mass percent of Cu reach
8%, make final rack body.
Embodiment 2:
Fe-Cu-C alloy is made less than the water-atomized iron powder of 150 μm, copper powder and graphite powder through mixed powder, molding with particle diameter
The matrix skeleton of rack body, wherein, the mass percent 4% of inducing metal Cu, the matter of C in Fe-Cu-C alloy substrate skeleton
Amount percentage ratio is 0.4%.
By the iron powder of 1.9%, the zinc powder of 2%, the manganese powder of 1.5%, the boron powder of 1.3%, the chromium powder of 1%, the molybdenum powder of 1%,
The lubricant of 0.3%, the mass percent of surplus copper powder is configured to copper seeping agent preforming pressed compact, and the particle diameter of copper seeping agent is distributed as:
Particle diameter≤50 μm: 12%, 50 ＜ particle diameter≤100 μm: 85%, particle diameter ＞ 100 μm: 3%.
Then remove oxide and the nitride film on matrix skeleton surface, copper seeping agent preforming pressed compact is placed in matrix skeleton
Top, is placed in stove and is sintered infiltration simultaneously.Sintering and infiltration technique is: at 750 DEG C of insulation 15min with burn off lubricant,
1020 DEG C of insulation 15min are to dissolve graphite powder, then at 1130 DEG C of sintering infiltration 24min, make the mass percent of Cu reach
9.2%, make final rack body.
Embodiment 3:
Fe-Cu-C alloy is made less than the water-atomized iron powder of 150 μm, copper powder and graphite powder through mixed powder, molding with particle diameter
The matrix skeleton of rack body, wherein, the mass percent 4% of inducing metal Cu, the matter of C in Fe-Cu-C alloy substrate skeleton
Amount percentage ratio is 0.5%.
By the iron powder of 1.96%, the zinc powder of 2.2%, the manganese powder of 1.5%, the boron powder of 2%, the chromium powder of 1.5%, 1.5%
Molybdenum powder, the lubricant of 0.3%, the mass percent of surplus copper powder is configured to copper seeping agent preforming pressed compact, and the particle diameter of copper seeping agent divides
Cloth is: particle diameter≤50 μm: 12%, 50 ＜ particle diameter≤100 μm: 85%, particle diameter ＞ 100 μm: 3%.
Then remove oxide and the nitride film on matrix skeleton surface, copper seeping agent preforming pressed compact is placed in matrix skeleton
Top, is placed in stove and is sintered infiltration simultaneously.Sintering and infiltration technique is: at 750 DEG C of insulation 15min with burn off lubricant,
1020 DEG C of insulation 15min are to dissolve graphite powder, then at 1130 DEG C of sintering infiltration 25min, make the mass percent of Cu reach
10.5%, make final rack body.
Embodiment 4:
Fe-Cu-C alloy is made less than the water-atomized iron powder of 150 μm, copper powder and graphite powder through mixed powder, molding with particle diameter
The matrix skeleton of rack body, wherein, the mass percent 5% of inducing metal Cu, the matter of C in Fe-Cu-C alloy substrate skeleton
Amount percentage ratio is 0.6%.
By the iron powder of 2.0%, the zinc powder of 1.8%, the manganese powder of 1.3%, the boron powder of 1.6%, the chromium powder of 1.6%, 1.5%
Molybdenum powder, the lubricant of 0.3%, the mass percent of surplus copper powder is configured to copper seeping agent preforming pressed compact, and the particle diameter of copper seeping agent divides
Cloth is: particle diameter≤50 μm: 12%, 50 ＜ particle diameter≤100 μm: 85%, particle diameter ＞ 100 μm: 3%.
Then remove oxide and the nitride film on matrix skeleton surface, copper seeping agent preforming pressed compact is placed in matrix skeleton
Top, is placed in stove and is sintered infiltration simultaneously.Sintering and infiltration technique is: at 750 DEG C of insulation 15min with burn off lubricant,
1020 DEG C of insulation 15min are to dissolve graphite powder, then at 1130 DEG C of sintering infiltration 27min, make the mass percent of Cu reach
12.5%, make final rack body.
Embodiment 5:
Fe-Cu-C alloy is made less than the water-atomized iron powder of 150 μm, copper powder and graphite powder through mixed powder, molding with particle diameter
The matrix skeleton of rack body, wherein, the mass percent 5% of inducing metal Cu, the matter of C in Fe-Cu-C alloy substrate skeleton
Amount percentage ratio is 0.7%.
By the iron powder of 2.1%, the zinc powder of 1.9%, the manganese powder of 2%, the boron powder of 1.5%, the chromium powder of 2%, the molybdenum of 1.5%
Powder, the lubricant of 0.3%, the mass percent of surplus copper powder is configured to copper seeping agent preforming pressed compact, the particle diameter distribution of copper seeping agent
For: particle diameter≤50 μm: 12%, 50 ＜ particle diameter≤100 μm: 85%, particle diameter ＞ 100 μm: 3%.
Then remove oxide and the nitride film on matrix skeleton surface, copper seeping agent preforming pressed compact is placed in matrix skeleton
Top, is placed in stove and is sintered infiltration simultaneously.Sintering and infiltration technique is: at 750 DEG C of insulation 15min with burn off lubricant,
1020 DEG C of insulation 15min are to dissolve graphite powder, then at 1130 DEG C of sintering infiltration 28min, make the mass percent of Cu reach
13.7%, make final rack body.
Embodiment 6:
Fe-Cu-C alloy is made less than the water-atomized iron powder of 150 μm, copper powder and graphite powder through mixed powder, molding with particle diameter
The matrix skeleton of rack body, wherein, the mass percent 5% of inducing metal Cu, the matter of C in Fe-Cu-C alloy substrate skeleton
Amount percentage ratio is 0.8%.
By the iron powder of 2.15%, the zinc powder of 2.1%, the manganese powder of 1.8%, the boron powder of 1.2%, the chromium powder of 2%, the molybdenum of 2%
Powder, the lubricant of 0.3%, the mass percent of surplus copper powder is configured to copper seeping agent preforming pressed compact, the particle diameter distribution of copper seeping agent
For: particle diameter≤50 μm: 12%, 50 ＜ particle diameter≤100 μm: 85%, particle diameter ＞ 100 μm: 3%.
Then remove oxide and the nitride film on matrix skeleton surface, copper seeping agent preforming pressed compact is placed in matrix skeleton
Top, is placed in stove and is sintered infiltration simultaneously.Sintering and infiltration technique is: at 750 DEG C of insulation 15min with burn off lubricant,
1020 DEG C of insulation 15min are to dissolve graphite powder, then at 1130 DEG C of sintering infiltration 30min, make the mass percent of Cu reach
14.9%, make final rack body.
Comparative example 1:
Comparative example 1 differs only in embodiment 3, comparative example 1 directly by particle diameter less than 150 μm water-atomized iron powder,
Copper powder and graphite powder are made through mixed powder, molding and sintering, and the mass percent of copper powder and graphite powder is same as in Example 3.
Comparative example 2:
Comparative example 2 differs only in embodiment 3, and the copper seeping agent of comparative example 2 is pure copper powder.
Comparative example 3:
Comparative example 3 differs only in embodiment 3, and in the copper seeping agent of comparative example 3, iron content is 1.8%.
Comparative example 4:
Comparative example 4 differs only in embodiment 3, and in the copper seeping agent of comparative example 4, iron content is 2.2%.
Comparative example 5:
Comparative example 5 differs only in embodiment 3, and without inducing metal Cu in the matrix skeleton of comparative example 5, Cu is whole
Penetrated into by copper seeping agent.
Comparative example 6:
Comparative example 6 differs only in embodiment 3, and the particle diameter of the copper seeping agent of comparative example 6 is distributed as: particle diameter≤50 μm:
30%, 50 ＜ particle diameter≤100 μm: 60%, particle diameter ＞ 100 μm: 10%.
The rack body that embodiment 1-6 and comparative example 1-6 prepare is carried out performance test, and test result is as shown in table 1.
Table 1
As known from Table 1, with Fe-Cu-C alloy as matrix, use copper seeping agent of the present invention to carry out molten oozing and process prepared support originally
Compactness and the performance of body are the most excellent.
In above-described embodiment and alternative thereof, mass percent≤10% of element M, Ke Yiwei in copper seeping agent
A kind of or the most several any proportioning in Mn, B, Cr, Mo, Zn.
In above-described embodiment and alternative thereof, in Fe-Cu-C alloy substrate, the mass percent of inducing metal Cu is also
Can with 3%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9%, 4%, 4.1%,
4.2%, 4.3%, 4.4%, 4.5%, 4.6%, 4.7%, 4.8%, 4.9%, 5%, 5.1%, 5.2%, 5.3%, 5.4%,
5.5%.
In above-described embodiment and alternative thereof, the particle diameter distribution of copper seeping agent can also be: particle diameter≤50 μm: 5%, 50
＜ particle diameter≤100 μm: 90%, particle diameter ＞ 100 μm: 5%；Particle diameter≤50 μm: 25%, 50 ＜ particle diameter≤100 μm: 70%, particle diameter
＞ 100 μm: 5%；Particle diameter≤50 μm: 10%, 50 ＜ particle diameter≤100 μm: 85%, particle diameter ＞ 100 μm: 5%；Particle diameter≤50 μm:
15%, 50 ＜ particle diameter≤100 μm: 80%, particle diameter ＞ 100 μm: 5%；Particle diameter≤50 μm: 15%, 50 ＜ particle diameter≤100 μm:
84%, particle diameter ＞ 100 μm: 1%；Particle diameter≤50 μm: 20%, 50 ＜ particle diameter≤100 μm: 78%, particle diameter ＞ 100 μm: 2%；Grain
Footpath≤50 μm: 20%, 50 ＜ particle diameter≤100 μm: 75%, particle diameter ＞ 100 μm: 5%；Particle diameter≤50 μm: 15%, 50 ＜ particle diameters≤
100 μm: 82%, particle diameter ＞ 100 μm: 3%.
In above-described embodiment and alternative thereof, the temperature of burn off lubricant can also be 730 DEG C, 735 DEG C, 740 DEG C,
745 DEG C, 755 DEG C, 760 DEG C, 765 DEG C, 770 DEG C, temperature retention time can also be 10min, 11min, 12min, 13min, 14min,
16min、17min、18min、19min、20min。
In above-described embodiment and alternative thereof, the temperature dissolving graphite powder can also be 1000 DEG C, 1005 DEG C, 1010
DEG C, 1015 DEG C, 1020 DEG C, 1025 DEG C, 1030 DEG C, 1035 DEG C, 1040 DEG C, 1045 DEG C, 1050 DEG C, temperature retention time can also be
10min、11min、12min、13min、14min、16min、17min、18min、19min、20min。
In above-described embodiment and alternative thereof, the temperature of sintering and infiltration can also be 1110 DEG C, 1115 DEG C, 1120
℃、1125℃、1135℃、1140℃、1145℃、1150℃。
In view of the present invention program embodiment is numerous, each embodiment experimental data is huge numerous, is not suitable for arranging the most one by one
Lift explanation, but the content of the required checking of each embodiment and the final conclusion obtained are the most close.What the use present invention prepared props up
The density of frame body is all higher than 7.3g/cm3, hardness HRB is all higher than 85, and tensile strength is all higher than 700MPa, and impact flexibility is the biggest
In 13.5J/cm2.So the checking content of each embodiment not being illustrated, one by one only using embodiment 1-6 as generation
In place of table illustrates the present patent application excellence.
Specific embodiment described herein is only to present invention spirit explanation for example.Technology neck belonging to the present invention
Described specific embodiment can be made various amendment or supplements or use similar mode to replace by the technical staff in territory
Generation, but without departing from the spirit of the present invention or surmount scope defined in appended claims.
Claims (10)
1. Combined desk is with connecting a support, including rack body, it is characterised in that: described rack body assumes diamond in shape body
Shape, it has upper surface, lower surface, left surface, right flank, front end face and rear end face, and the middle part of described rack body offers
Installing hole, described installing hole runs through the two ends of rack body and installing hole and extends respectively to upper surface and lower surface, at left surface
Being respectively arranged with the most horizontal-extending block with the middle part having side, the projection of shape of described block is rhombus, two blocks with
Two spacing breach it are respectively formed with between left surface and right flank；
Wherein, described rack body is made up of powder metallurgy sintered steel.
A kind of Combined desk the most according to claim 1 connects support, it is characterised in that: described upper surface and under
Be respectively arranged with the reaming being positioned at installing hole two ends on surface, the aperture of described reaming by the end of installing hole to upper surface with under
Surface is gradually increased.
A kind of Combined desk the most according to claim 2 connects support, it is characterised in that: the surface of described block
And it is provided with an inclined-plane between the lateral wall of block.
A kind of Combined desk the most according to claim 3 connects support, it is characterised in that: described block sidewall and
Arc angle it is provided with between block end face.
A kind of Combined desk the most according to claim 1 connects support, it is characterised in that: described powder metallurgy burns
Knot steel mainly is become to be grouped into by following mass percent: C:0.3-0.8%, Cu:8-14.9%, element M ＜ 2%, Fe: surplus.
A kind of Combined desk connection support the most according to claim 5, it is characterised in that: described element M be Mn,
One or more in B, Cr, Mo, Zn.
A kind of Combined desk the most according to claim 5 connects support, it is characterised in that: described powder metallurgy burns
Knot steel is with Fe-Cu-C alloy as matrix, uses copper seeping agent to carry out infiltration and processes prepared.
A kind of Combined desk the most according to claim 7 connects support, it is characterised in that: described Fe-Cu-C closes
Auri body is made up through mixed powder, molding of water-atomized iron powder, copper powder and graphite；Wherein, the quality hundred of Cu in Fe-Cu-C alloy substrate
Proportion by subtraction 3-5.5%.
9. connect support according to a kind of Combined desk described in claim 6 or 7, it is characterised in that: described copper seeping agent
Become to be grouped into by following mass percent: iron powder: 1.87-2.15%, element M powder≤10%, lubricant L T.LT.LT 0.5%, copper powder: remaining
Amount.
A kind of Combined desk the most according to claim 7 connects support, it is characterised in that: described copper seeping agent
Particle diameter is distributed as: particle diameter≤50 μm: 5-25%, 50 ＜ particle diameter≤100 μm: 70-90%, particle diameter ＞ 100 μm: 1-5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610774072.0A CN106286504A (en) | 2016-08-30 | 2016-08-30 | A kind of Combined desk is with connecting support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610774072.0A CN106286504A (en) | 2016-08-30 | 2016-08-30 | A kind of Combined desk is with connecting support |
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| CN106286504A true CN106286504A (en) | 2017-01-04 |
Family
ID=57674637
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610774072.0A Pending CN106286504A (en) | 2016-08-30 | 2016-08-30 | A kind of Combined desk is with connecting support |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109158593A (en) * | 2018-08-17 | 2019-01-08 | 宁波瑞丰汽车零部件有限公司 | A kind of preparation method of desk connecting bracket |
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| CN109158593A (en) * | 2018-08-17 | 2019-01-08 | 宁波瑞丰汽车零部件有限公司 | A kind of preparation method of desk connecting bracket |
| CN109158593B (en) * | 2018-08-17 | 2021-04-30 | 宁波瑞丰汽车零部件有限公司 | Preparation method of office table connecting bracket |
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Application publication date: 20170104 |