CN106553677A - A kind of infantees car and its method for maintaining - Google Patents
A kind of infantees car and its method for maintaining Download PDFInfo
- Publication number
- CN106553677A CN106553677A CN201510623471.2A CN201510623471A CN106553677A CN 106553677 A CN106553677 A CN 106553677A CN 201510623471 A CN201510623471 A CN 201510623471A CN 106553677 A CN106553677 A CN 106553677A
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- castor
- layer
- infantees
- alloy layer
- laser
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
- B62B3/10—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor characterised by supports specially adapted to objects of definite shape
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/058—Alloys based on nickel or cobalt based on nickel with chromium without Mo and W
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/07—Alloys based on nickel or cobalt based on cobalt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Laser Beam Processing (AREA)
Abstract
The present invention is a kind of infantees car and its method for maintaining, infantees car includes vehicle frame, pushing hands on rear side of vehicle frame, it is parallel on the vehicle frame to be provided with a prescription shape infantees pipe, infantees folder is equipped with this group of infantees pipe, underframe below the vehicle frame, is provided with, the underframe is provided with puts hurdle component, four ends of the underframe are provided with one group of castor with footbrake, and the inside of this group of castor is provided with spring damper.Anticollison block is additionally provided with the top of the castor.The upper and lower ends of the neighbouring pushing hands are provided with stull and lower brace, upper stull is provided with a pair of fixed block assemblies, support bar is provided between this pair of fixed block assembly, the infantees folder is resiliently arranged on support bar by torsion spring, and the leading section of infantees folder is pressed on infantees pipe.The Medical wrap vehicle is made using 304 rustless steels, is easy to cleaning.
Description
Technical field
The present invention relates to a kind of go-cart, specifically a kind of Medical wrap vehicle and its method for maintaining.
Background technology
Medical wrap vehicle, refer to is used for a kind of go-cart dried and deposit of infantees and medical packing paper in medical institutions.Serious wear when Medical wrap vehicle castor is used.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of Medical wrap vehicle and its method for maintaining.
In order to solve above-mentioned technical problem, the invention provides a kind of infantees car, including：Vehicle frame, pushing hands on rear side of vehicle frame, it is parallel on the vehicle frame to be provided with a prescription shape infantees pipe, infantees folder is equipped with this group of infantees pipe, underframe is provided with below the vehicle frame, the underframe is provided with puts hurdle component, and four ends of the underframe are provided with the castor of one group of cast iron molding with footbrake, and the inside of this group of castor is provided with spring damper.
The method for maintaining of the infantees car, including the laser repair method of castor, the restorative procedure include：In one layer of transition alloy layer of surface laser cladding of castor, one layer of intermediate alloy layer of laser melting coating on the transition alloy layer, the laser melting coating layer of surface alloy-layer on the intermediate alloy layer；The component and mass percentage content of the alloy powder adopted by the transition alloy layer is C：0.2%～0.3%, Si：3.2%～3.6%, B：1.2%～1.8%, Fe：2.2%～2.6%, Cr：7%～8%, remaining is Ni；The component and mass percentage content of the alloy powder adopted by the intermediate alloy layer is C：0.4%～0.5%, Si：3.8%～4.3%, B：12%～13%, Fe：2.5%～3.2%, Cr：10%～12%, remaining is Ni；The component and mass percentage content of the alloy powder adopted by the surface alloying layer is C：0.05%～0.1%, Si：3.2%～3.6%, Fe：2%～4%, Cr：16%～19%, Mo：27%～30%, remaining is Co.
In order that intermediate alloy layer and transition alloy layer will not because of the blocked up hardness for affecting castor surface, a kind of above-mentioned technical scheme preferably：Thickness of the thickness of the surface alloying layer more than the intermediate alloy layer, the thickness of the intermediate alloy layer are more than the thickness of transition alloy layer.
The thickness of the surface alloying layer is 1.5 times～3 times of the thickness of the intermediate alloy layer, and the thickness of the intermediate alloy layer is 1.2 times～2 times of transition alloy layer thickness.
Laser melting coating carries out continuous helical feeding overlap joint scanning by light source of fast-transverse-flow CO2 laser by the way of preset powder feeding to castor；Laser power is 1700W to 2100W, and absolute altitude is 235mm to 240mm, and spot size is 12mm × 1.8mm, and scanning speed is 120mm/min to 150mm/min, and amount of lap is 3mm, and powder sending quantity is 6g/min to 12g/min.
Before laser melting coating, the dust on castor, greasy dirt, corrosion are removed；The size at each position of detection castor, determines failure site and its wear extent；Radial direction, end face run-out inspection are carried out to castor, the deflection of castor is checked；The fatigue layer that castor failure site is removed by polishing, and cleaned.The size at each position, determines failure site and its wear extent；Radial direction, end face run-out inspection are carried out to castor, whether inspection castor has metaboly；The fatigue layer that castor failure site is removed by polishing, and cleaned.
The invention has the beneficial effects as follows,（1）The Medical wrap vehicle of the present invention is made using 304 rustless steels, is easy to cleaning.In the present invention, the inside of the castor is provided with spring damper so that Medical wrap vehicle can play a part of shock-absorbing when through rugged ground.In the present invention, the infantees pipe is square infantees pipe, coordinates infantees folder, can play the effect for preventing cloth from sliding.In the present invention, anticollison block is provided with the top of the castor can make Medical wrap vehicle avoid frontal impact.The Medical wrap vehicle surface of the present invention is covered with Teflon material figure layer, due to the resistance to viscosity of Teflon material so that Medical wrap vehicle is difficult adhesive dust, greasy dirt.（2）The laser repair method of the castor of the present invention utilizes laser melting and coating technique, for the performance requirement that castor local or large area are worn and torn according to castor different parts, employ three kinds of different alloy powders, multi-layer classification cladding is carried out, is prevented from cladding process and ensures that performance reduces the probability for cracking again., as a result of different alloys, hardness, toughness, intensity are different for transition zone, intermediate layer, top layer, both can guarantee that the toughness and intensity of inside, and can guarantee that surface hardness reaches more than 58HRC again, with fabulous wearability, corrosion resistance, thermohardening.The technique adopts broad band laser beam, in hgher efficiency.The technique controls powder sending quantity by the way of preset powder feeding, strictly, and laser power, scanning speed, amount of lap etc. are optimized so that the structural homogenity of cladding layer is good, thickness and hardness are uniform.The technique causes that the fusion rate of cladding layer and the matrix of castor failure site is high, is tightly combined, and castor deflection is little, and castor surface does not have crackle and pore.The service life for improving castor is had great importance using the laser repair method of the castor of the present invention.The top layer of the laser repair method of the castor of the present invention adopts Co base alloy powders, strict control has been carried out to the proportioning of alloy powder, so that top layer has good corrosion, oxidation and thermohardening, used and hardness requirement with meeting its hot environment, and while with good wettability and self-fluxing nature.（3）The proportioning of alloy powder of the transition zone and intermediate layer of the laser repair method of the castor of the present invention to being adopted has carried out strict control, to make it have good welding characteristic.Also, transition zone is using the slightly lower Ni base alloy powders of hardness, to ensure internal toughness and intensity；Intermediate layer toughness and crushing resistance are not lost using the hardness Ni base alloy powder more slightly higher than transition zone.
Description of the drawings
The present invention is further described with reference to the accompanying drawings and examples：
Fig. 1 shows the front view of the Medical wrap vehicle of the present invention；
Fig. 2 shows the top view of the Medical wrap vehicle of the present invention；
Fig. 3 shows the side view of the Medical wrap vehicle of the present invention；
Fig. 4 shows the sectional view of the spring damper of the Medical wrap vehicle of the present invention；
Fig. 5 is the crystalline phase figure of matrix and transition alloy layer after the castor of the present invention is repaired；
Fig. 6 is the crystalline phase figure of transition alloy layer and intermediate alloy layer after the car of the present invention is repaired；
Fig. 7 is the crystalline phase figure of intermediate alloy layer and surface alloying layer after the car of the present invention is repaired；
Fig. 8 is the laser cladding layer cross section crystalline phase figure after the car of the present invention is repaired；
Fig. 9 is the microhardness photo of the laser cladding layer after the car of the present invention is answered；
Reference in figure：Hurdle component, 8 castors, 9 spring dampers, stull, 11 lower braces, 12 fixed block assemblies, 13 support bars, 14 torsion springs, 15 anticollison blocks on 10 are put in 1 vehicle frame, 2 pushing hands, 4 infantees pipes, 5 infantees folder, 6 underframe, 7.
Specific embodiment
As shown in figure 1, the Medical wrap vehicle of the present embodiment, including vehicle frame 1, the pushing hands 2 on rear side of vehicle frame 1, parallel on the vehicle frame 1 to be provided with a prescription shape infantees pipe 4, the distance and upper-lower position between this group of infantees pipe 4 can be adjusted according to actual needs.Infantees folder 5 is equipped with infantees pipe 4, the plastic for preventing electrostatic can be arranged with the infantees folder 5, the lower section of the vehicle frame 1 is provided with underframe 6, the underframe 6 is provided with puts hurdle component 7, the distribution for putting hurdle component 7 can be adjusted according to actual needs, four ends of the underframe 6 are provided with one group of castor 8 with footbrake, and the inside of this group of castor 8 is provided with spring damper 9.
The method for maintaining of the infantees car, including the laser repair method of castor, the restorative procedure include：In one layer of transition alloy layer of surface laser cladding of castor, one layer of intermediate alloy layer of laser melting coating on the transition alloy layer, the laser melting coating layer of surface alloy-layer on the intermediate alloy layer；The component and mass percentage content of the alloy powder adopted by the transition alloy layer is C：0.2%～0.3%, Si：3.2%～3.6%, B：1.2%～1.8%, Fe：2.2%～2.6%, Cr：7%～8%, remaining is Ni；The component and mass percentage content of the alloy powder adopted by the intermediate alloy layer is C：0.4%～0.5%, Si：3.8%～4.3%, B：12%～13%, Fe：2.5%～3.2%, Cr：10%～12%, remaining is Ni；The component and mass percentage content of the alloy powder adopted by the surface alloying layer is C：0.05%～0.1%, Si：3.2%～3.6%, Fe：2%～4%, Cr：16%～19%, Mo：27%～30%, remaining is Co.
In order that intermediate alloy layer and transition alloy layer will not because of the blocked up hardness for affecting castor surface, a kind of above-mentioned technical scheme preferably：Thickness of the thickness of the surface alloying layer more than the intermediate alloy layer, the thickness of the intermediate alloy layer are more than the thickness of transition alloy layer.
The thickness of the surface alloying layer is 1.5 times～3 times of the thickness of the intermediate alloy layer, and the thickness of the intermediate alloy layer is 1.2 times～2 times of transition alloy layer thickness.
Laser melting coating carries out continuous helical feeding overlap joint scanning by light source of fast-transverse-flow CO2 laser by the way of preset powder feeding to castor；Laser power is 1700W to 2100W, and absolute altitude is 235mm to 240mm, and spot size is 12mm × 1.8mm, and scanning speed is 120mm/min to 150mm/min, and amount of lap is 3mm, and powder sending quantity is 6g/min to 12g/min.
Before laser melting coating, the dust on castor, greasy dirt, corrosion are removed；The size at each position of detection castor, determines failure site and its wear extent；Radial direction, end face run-out inspection are carried out to castor, the deflection of castor is checked；The fatigue layer that castor failure site is removed by polishing, and cleaned.The size at each position, determines failure site and its wear extent；Radial direction, end face run-out inspection are carried out to castor, whether inspection castor has metaboly；The fatigue layer that castor failure site is removed by polishing, and cleaned.
Castor after the laser repair method of the castor of the present invention is repaired, the hardness of transition alloy layer is HRC40～50, and the hardness of intermediate alloy layer is HRC50～58, and the hardness of surface alloying layer is HRC58～62, and crystalline phase is as shown in Figs. 5 to 7.The top half of Fig. 5 is transition alloy layer, and the latter half is matrix, and both are tightly combined, and the dendrite of transition alloy layer is more thick.The top half of Fig. 6 is intermediate alloy layer, and the latter half is transition alloy layer, and transition between the two is gentle, good with reference to effect, and intermediate alloy layer is thinner than the dendrite of transition alloy layer and organizes finer and close.The top half of Fig. 7 is surface alloying layer, and the latter half is intermediate alloy layer, and transition between the two is gentle, good with reference to effect, and intermediate alloy layer is thinner than the dendrite of transition alloy layer and organizes finer and close.
The cross section of the castor laser cladding layer after the laser repair method of the castor of the present invention is repaired is as shown in Figure 8.The top half of Fig. 8 is laser cladding layer, and the latter half is matrix, and both tissues are slightly different, and the boundary line between transition alloy layer, intermediate alloy layer, surface alloying layer cannot be differentiated, and illustrate that the combination effect between each laser cladding layer and matrix is preferable.
The hardness of laser cladding layer is gradual change, as shown in Figure 9.The top half of Fig. 9 is laser cladding layer, and the latter half is matrix, what the hardness of transition alloy layer, intermediate alloy layer and surface alloying layer was incremented by.
Claims (6)
1. a kind of infantees car, it is characterised in that include：Vehicle frame（1）, located at vehicle frame（1）The pushing hands of rear side（2）, the vehicle frame（1）It is above parallel to be provided with a prescription shape infantees pipe（4）, this group of infantees pipe（4）On be equipped with infantees folder（5）, the vehicle frame（1）Lower section be provided with underframe（6）, the underframe (6) is provided with puts hurdle component（7）, the underframe（6) four ends are provided with the castor (8) of one group of cast iron molding with footbrake, and the inside of this group of castor (8) is provided with spring damper（9）.
2. a kind of method for maintaining of the car of infantees according to claim 1, it is characterised in that including the laser repair method of castor, the restorative procedure includes：In one layer of transition alloy layer of surface laser cladding of castor, one layer of intermediate alloy layer of laser melting coating on the transition alloy layer, the laser melting coating layer of surface alloy-layer on the intermediate alloy layer；
The component and mass percentage content of the alloy powder adopted by the transition alloy layer is C：0.2%～0.3%, Si：3.2%～3.6%, B：1.2%～1.8%, Fe：2.2%～2.6%, Cr：7%～8%, remaining is Ni；
The component and mass percentage content of the alloy powder adopted by the intermediate alloy layer is C：0.4%～0.5%, Si：3.8%～4.3%, B：12%～13%, Fe：2.5%～3.2%, Cr：10%～12%, remaining is Ni；
The component and mass percentage content of the alloy powder adopted by the surface alloying layer is C：0.05%～0.1%, Si：3.2%～3.6%, Fe：2%～4%, Cr：16%～19%, Mo：27%～30%, remaining is Co.
3. laser repair method according to claim 2, it is characterised in that：Thickness of the thickness of the surface alloying layer more than the intermediate alloy layer, the thickness of the intermediate alloy layer are more than the thickness of transition alloy layer.
4. laser repair method according to claim 2, it is characterised in that：The thickness of the surface alloying layer is 1.5 times～3 times of the thickness of the intermediate alloy layer, and the thickness of the intermediate alloy layer is 1.2 times～2 times of transition alloy layer thickness.
5. laser repair method according to claim 4, it is characterised in that：Laser melting coating carries out continuous helical feeding overlap joint scanning by light source of fast-transverse-flow CO2 laser by the way of preset powder feeding to castor；Laser power is 1700W to 2100W, and absolute altitude is 235mm to 240mm, and spot size is 12mm × 1.8mm, and scanning speed is 120mm/min to 150mm/min, and amount of lap is 3mm, and powder sending quantity is 6g/min to 12g/min.
6. laser repair method according to claim 5, it is characterised in that：Before laser melting coating, the dust on castor, greasy dirt, corrosion are removed；The size at each position of detection castor, determines failure site and its wear extent；Radial direction, end face run-out inspection are carried out to castor, the deflection of castor is checked；The fatigue layer that castor failure site is removed by polishing, and cleaned.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510623471.2A CN106553677A (en) | 2015-09-25 | 2015-09-25 | A kind of infantees car and its method for maintaining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510623471.2A CN106553677A (en) | 2015-09-25 | 2015-09-25 | A kind of infantees car and its method for maintaining |
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| Publication Number | Publication Date |
|---|---|
| CN106553677A true CN106553677A (en) | 2017-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510623471.2A Pending CN106553677A (en) | 2015-09-25 | 2015-09-25 | A kind of infantees car and its method for maintaining |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030164602A1 (en) * | 2002-03-04 | 2003-09-04 | Kuhlman Thomas E. | Table cart |
| CN201980264U (en) * | 2010-12-15 | 2011-09-21 | 刘昕陇 | Multifunctional foldable book trolley |
| CN202015309U (en) * | 2011-03-18 | 2011-10-26 | 万盛精密钣金江苏有限公司 | Medical wrap vehicle |
| CN203439449U (en) * | 2013-08-26 | 2014-02-19 | Tcl王牌电器(惠州)有限公司 | Supporting frame |
| CN104878380A (en) * | 2015-04-30 | 2015-09-02 | 辽宁思达思克实业有限公司 | Laser remanufacturing and reinforcing method of mine car wheel set |
-
2015
- 2015-09-25 CN CN201510623471.2A patent/CN106553677A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030164602A1 (en) * | 2002-03-04 | 2003-09-04 | Kuhlman Thomas E. | Table cart |
| CN201980264U (en) * | 2010-12-15 | 2011-09-21 | 刘昕陇 | Multifunctional foldable book trolley |
| CN202015309U (en) * | 2011-03-18 | 2011-10-26 | 万盛精密钣金江苏有限公司 | Medical wrap vehicle |
| CN203439449U (en) * | 2013-08-26 | 2014-02-19 | Tcl王牌电器(惠州)有限公司 | Supporting frame |
| CN104878380A (en) * | 2015-04-30 | 2015-09-02 | 辽宁思达思克实业有限公司 | Laser remanufacturing and reinforcing method of mine car wheel set |
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Application publication date: 20170405 |