CN108836430A - A kind of medical calm and preparation method thereof - Google Patents
A kind of medical calm and preparation method thereof Download PDFInfo
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- CN108836430A CN108836430A CN201810595795.3A CN201810595795A CN108836430A CN 108836430 A CN108836430 A CN 108836430A CN 201810595795 A CN201810595795 A CN 201810595795A CN 108836430 A CN108836430 A CN 108836430A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/2812—Surgical forceps with a single pivotal connection
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/2812—Surgical forceps with a single pivotal connection
- A61B17/282—Jaws
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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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
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/057—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being less 10%
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00831—Material properties
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Abstract
The invention discloses a kind of medical calms, including caliper and jaw, the jaw is fixedly connected by laser spot welding with caliper, there are weld gaps with caliper joint place for the jaw, the weld gap internal coat has graphitization solder, and the jaw and caliper are bonded as one by vacuum brazing.Also disclose the production method of the medical calm.The medical calm and preparation method thereof improves jaw selection range, not easily to fall off after welding, improves service life；Make the smooth densification of weld interface, almost without weld seam, it is firm to weld for welding；Weldering connection is more longlasting between dissimilar metal and has stronger plasticity.
Description
Technical field
The present invention relates to the field of medical instrument technology, more particularly, to a kind of medical calm and preparation method thereof.
Background technique
In surgical operation, medical calm is an essential tool, and medical calm belongs to as operational tool easily to disappear
Work consuming tool, common production method is to make caliper with low or middle carbon stainless steel, and blade portion welds the edge of a knife made of high hardness material.
But since low or middle carbon stainless steel and jaw high hardness material welding performance are very poor, that is, it is difficult to weld together, so generally
Using adhering method.But the difference of metal structure causes the two linear expansion coefficient different between dissimilar metal, bath and side
Filling metal occurs at edge to mix with the base metals of fusing, but mixes situation and has a certain difference, unmixed zone
There is decarburized layer present in toe of the weld, in dissimilar metal on one side in domain, and carburetting layer occurs in another side, influence it is welded can
Plasticity and persistence.
Chinese patent literature（The day for announcing：On April 19th, 2017, notification number：CN106562809A）It discloses a kind of medical
It clamps (cutting), which includes handle, pincers (cutting) head matrix and pincers (cutting) mouth, and the handle and pincers (cut) head matrix
Hardness is less than the hardness of pincers (cutting) mouth, and the pincers, which (cut) mouth and are connected to pincers, (to be cut) on head matrix, and the pincers (cut) head matrix
(cutting) the solder flux bonding that mouth junction passes through high temperature melting coated with solder flux, pincers (cutting) the head matrix and pincers (cutting) mouth with pincers is
One is whole, so that handle is hardened or is dissolved with pincers (cutting) head matrix while high-temperature soldering, and be bonded the pincers after being integral
(cutting) mouth passes through high frequency or laser or flame selective hardening.Also disclose the processing method of above-mentioned medical calm (cutting).Using this plus
Medical calm made from work method (is cut), is not only clamped (cutting) mouth hardness height, be will not fall off, and good antirust property, the service life is long, clamps (cutting) mouth
It will not black, and more convenient in selection, selection range is wide, greatly reduces manufacturing cost.
The problems such as mode that above-mentioned technical proposal uses solder flux to be bonded is to solve to fall off, black, but above-mentioned technical proposal
Carbon Migration Phenomenon can occur when not can solve different-metal material welding but.
Summary of the invention
The invention aims to solve, that carbon diffusion can occur is existing when medical calm is using different-metal material welding in the prior art
The problems such as so as to cause jaw and big solder selection limitation, and a kind of formation that can effectively inhibit carbide is provided, thus
Avoid carbon diffusion from forming diffusion layer it is not easily to fall off after welding so that jaw selection range is wide, the medical calm that improves service life and
Its production method.
The present invention realizes that technical solution used by its technical purpose is：A kind of medical calm, including caliper and jaw, it is described
Jaw be fixedly connected by laser spot welding with caliper, there are weld gap, the welderings with caliper joint place for the jaw
Gap internal coat has graphitization solder, and the jaw and caliper are bonded as one by vacuum brazing.The medical calm, passes through
Jaw and caliper connection type are improved, jaw is first fixed on to the predetermined position of caliper with laser spot welding, and in jaw
There are weld gaps with the joint place of caliper, and solder is graphitized in weld gap internal coat, then put it into vacuum pricker
It is brazed in brazier, jaw and vice body is made to hold together.Common solder innovation is graphitization pricker by the medical calm
The use of material, this graphitization solder effectively inhibits the formation of carbide, to avoid carbon diffusion from forming diffusion layer, so that xenogenesis
It connects more longlasting between steel and there is stronger plasticity.And in jaw and caliper selection it is more convenient extensively, save at
This, while jaw is not easily to fall off.
Preferably, the caliper is middle low carbon steel material members；The jaw is high-carbon steel material component.Using
Different metal production calipers and jaw had both met the requirement of jaw hardness, also met caliper using diversified material
Needs, advantageously reduce cost.
Preferably, the caliper includes binding clip and clamp handle, the binding clip and clamp handle pass through plug-in card or screw-type
It is detachably connected.Caliper is provided with binding clip and clamp handle and using being detachably connected, and such structure can be convenient root in operation
According to needing to replace different binding clips in clamp handle, the cross-species transferability of clamp handle is realized, so that the easy consumption class medical calm only needs
It replaces binding clip just and can satisfy different requirements, reduce manufacturing cost, improve versatility production.
Preferably, the clamp handle is telescopic structure, the clamp handle includes grip part and pars contractilis, and described stretches
Contracting portion is actively socketed on inside grip part, and the clamping structure by being arranged on pars contractilis and grip part positions；The pincers
Head is detachably connected with pars contractilis.Clamp handle is set as telescopic structure, and the service efficiency of clamp handle can be improved with effect, can satisfy
The requirement of difference operation and different users.
Preferably, being graphitized the nano graphite powder that solder includes solder matrix and is sprayed on outside solder matrix；It is described
Nano graphite powder and solder matrix mass ratio be 0.01~0.05:1.
The present invention realizes that technical solution used by its second goal of the invention is：A kind of production method of medical calm, packet
Include following steps：
Step 1：The production of caliper and jaw makes jaw with high-carbon steel, makes caliper with middle low carbon steel and presets on caliper
Jaw interconnecting piece；
Step 2：Jaw is fixed on the jaw interconnecting piece on caliper by laser spot welding；And it is pasted in jaw and jaw interconnecting piece
There are weld gaps at conjunction；
Step 3：It is graphitized the preparation of solder, nano-graphite dispersion liquid is sprayed on solder matrix and forms graphitization solder；
Step 4：Inside the weld gap that the graphitization solder that step 3 obtains is inserted into step 2 between jaw and caliper；
Step 5：It is coated with the jaw of graphitization solder and caliper is put into vacuum or inert gas brazing device is brazed, it will
Jaw and caliper are welded into an entirety；
Step 6：Localized hyperthermia's quenching treatment is carried out to the jaw of medical calm in step 5, ultimately forms finished product medical calm.
The production method of the medical calm makes jaw and caliper using dissimilar metal, and makes graphitization solder, first uses
Jaw is fixed on the reserved position of caliper by laser spot welding, and then graphitization solder is coated in jaw and caliper weld gap
Portion, then medical calm is packed into vacuum or inert gas brazing device and is brazed, in brazing device, temperature is increased to and sets
When fixed brazing temperature value, graphitization brazing filler metal melts at liquid and are filled up completely weld gap, and metallurgy occurs with jaw and caliper
Chemical reaction, during the reaction due to solder surface graphite powder presence, be with a kind of the molten of microcell in the welding process
What weldering carried out, several microns to more than ten microns or less interfaces of both dissimilar metals of caliper and jaw carry out, and are not related to its depth
The structure of layer is effectively pressed down so the generation of dissimilar metal surface Carbon Migration Phenomenon can be inhibited effectively by graphitizing
The formation of carbide processed, to avoid carbon diffusion from forming diffusion layer, so that connecting more longlasting between Dissimilar Steels and having stronger
Plasticity, subsequent during cooling, liquid graphitization solder makes jaw and caliper hold together to realize
Welding, and the welding, almost without weld seam, it is firm to weld, and will not fall off.The production method of the medical calm can select difference
The jaw and caliper of material, different hardness, in selection it is more convenient extensively, save the cost, while jaw is not easily to fall off, extends doctor
With the service life of pincers.Intercalation（intercalation reaction）Main body reactant (matrix) i.e. in insertion reaction
When for layer structure, guest molecule G is embedded in interlayer and generates sandwich.Chemical combination is embedded in as graphite generates single order, second order or three ranks
Object, intercalation are characterized in there is certain structure opening, and foreign atom or ion can be allowed to be easy to diffuse into or escape
Crystal.A large amount of lamellar structure compounds have the ability that intercalation occurs；
Preferably, in step 3 nano-graphite dispersion liquid preparation：In parts by weight, component includes 0.5~1.5 part natural
Graphite, 0.2~0.25 part of potassium permanganate, 1.5~1.9 parts of fuming nitric aicds, 0.45~0.5 part of oxalic acid, by above-mentioned component at 35 DEG C
~40 DEG C carry out the reaction min of 35 min~40；Obtained reaction mixture is washed with deionized water to neutrality, and 65 DEG C~
It is dried at 70 DEG C, the min of 10 min~15 is kept the temperature under 1000 DEG C of high temperature, expansion fossil ink powder is made；By expansion graphite obtained
Powder and dispersing agent, which are sufficiently mixed, is formed uniformly nano-graphite dispersion liquid.The above-mentioned preparation process of nano-graphite dispersion liquid, will be natural
Graphite, potassium permanganate, fuming nitric aicd, oxalic acid carry out intercalation, obtain intercalation mixture, and be washed with deionized water into
Property, it then dries, keeps the temperature and expansion fossil ink powder is made, be then again thoroughly mixed to form expansion fossil ink powder with graphite dispersing agent
Nano-graphite dispersion liquid, the nano-graphite dispersion liquid which produces uniformly can effectively be sprayed onto shape on solder
At graphitization solder.
Preferably, the solder in the step 3 is composed of the following components：Cr, B, Si, Fe, La and Ni, each component is with weight
Measure part meter：6.0~8.0 parts of Cr：, 2.75~3.5 parts of B, 4.0~5.0 parts of Si, 2.5~3.5 parts of Fe, 0.1~0.5 part of La,
79.5~84.65 parts of Ni.Solder uses above-mentioned component, and rare earth element activity is high, atomic radius is big, can play rotten, purification, thin
The effect for changing tissue, the powdery nickel-based solder prepared using mechanical alloying, and rare-earth elements of lanthanum is mixed, improve solder and mother
Material wetability, has good wetability and seam-filling ability, and the smooth densification of weld interface is well combined.
Preferably, the nano graphite powder specific surface area formed after nano-graphite dispersion liquid sprays on solder in step 3
For 500 cm2/ g~1000cm2The mass ratio of/g, the nano graphite powder and solder is 0.01~0.05:1.Nano graphite powder
Specific surface kind preferably 500 cm2/ g~1000cm2/ g, the too small then graphite powder partial size of specific surface area is too big, is unfavorable for the uniform of solder
Coating, the too big graphite powder of specific surface area is undersized, and being sprayed size less than the solder sprayed out will lead to metal component in solder
It cannot be introduced into graphite powder internal structure, specific surface area is excessive or too small can all influence subsequent welding effect.And nano graphite powder
Mass ratio with solder is preferably 0.01~0.05:1, the requirement that graphitization solder inhibits carbon diffusion can be met, while more
Facilitate the preparation of the solder.
Preferably, the temperature of vacuum brazing is 1000 DEG C~1200 DEG C, in vacuum degree≤10-3The Pa lower retention time is 10
Min~50min.
The beneficial effects of the invention are as follows：The medical calm improves jaw selection range, and not easily to fall off after welding, raising makes
Use the service life；Make the smooth densification of weld interface, almost without weld seam, it is firm to weld for welding；Weldering connection is more longlasting between dissimilar metal
And there is stronger plasticity.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of medical calm of the present invention.
Fig. 2 is a kind of decomposition texture schematic diagram of medical calm of the present invention.
Fig. 3 is a kind of structural schematic diagram that solder is graphitized in the present invention；
Fig. 4 is another structural schematic diagram of medical calm of the present invention；
Fig. 5 is enlarged drawing at A in Fig. 4；
In figure：1, caliper, 2, jaw, 3, weld gap, 4, graphitization solder, 5, binding clip, 6, clamp handle, 7, grip part, 8, flexible
Portion, 9, clamping structure, 10, solder matrix, 11, nano graphite powder.
Specific embodiment
Technical solution of the present invention is described in further detail below by specific embodiment and in conjunction with attached drawing.Embodiment
In it is raw materials used commercially available or prepared using conventional method, usage amount is indicated with parts by weight in embodiment.Dispersing agent uses
Commercially available No. 15 or No. 16 graphite dispersing agents.
Embodiment 1：
In Fig. 1, embodiment shown in Fig. 2, a kind of medical calm, including caliper 1 and jaw 2, jaw 2 pass through laser spot welding and pincers
Body 1 is fixedly connected, and there are weld gap 3,3 internal coat of weld gap has graphitization solder 4, pincers for jaw 2 and 1 joint place of caliper
Mouth 2 and caliper 1 are bonded as one by vacuum brazing.Jaw 2 is curved forceps mouth.
Caliper 1 is middle low carbon steel material members；Jaw 2 is high-carbon steel material component.
Caliper 1 includes binding clip 5 and clamp handle 6, and binding clip 5 is detachably connected with clamp handle 6 by plug-in card or screw-type.This implementation
Binding clip is connect with clamp handle card insert type in example.
Clamp handle 6 is telescopic structure, and clamp handle 6 includes grip part 7 and pars contractilis 8, and pars contractilis 8 is actively socketed on grip part 7
Inside, and the clamping structure 9 by being arranged on pars contractilis 8 and grip part 7 positions；Binding clip 5 is detachably connected with pars contractilis 8.
Grip part can be annular structure and be also possible to arcuate structure, and pars contractilis is then straightway, it can be circular configuration
It can be square structure.
Graphitization solder 4 includes solder matrix 10 and the nano graphite powder 11 being sprayed on outside solder matrix 10（See Fig. 3）；
The mass ratio of nano graphite powder 11 and solder matrix 10 is 0.01~0.05:1.
It is graphitized the preparation of solder 4：（1）The preparation of nano-graphite dispersion liquid：In parts by weight, component includes 0.5 part
Natural graphite, 0.2 part of potassium permanganate, 1.5 parts of fuming nitric aicds, 0.45 part of oxalic acid, by above-mentioned component in 35 DEG C of progress intercalations
35 min；Obtained intercalation mixture is washed with deionized water to neutrality, and is dried at 65 DEG C, is protected under 1000 DEG C of high temperature
Expansion fossil ink powder is made in 10 min of temperature；Expansion fossil ink powder obtained and dispersing agent are sufficiently mixed and are formed uniformly a nanometer stone
Black dispersion liquid；Expanding fossil ink powder in the present embodiment and filling with dispersing agent is by constantly crushing and mixing in supersonic wave cleaning machine
It is formed uniformly nano-graphite dispersion liquid.
（2）Solder is composed of the following components：Cr, B, Si, Fe, La and Ni, each component is in parts by weight：6.0 parts of Cr：,
2.75 parts of B, 4.0 parts of Si, 2.5 parts of Fe, 0.1 part of La, 84.65 parts of Ni.
（3）The nano graphite powder specific surface area that nano-graphite dispersion liquid is formed after spraying on solder is 500 cm2/g, is received
The mass ratio of rice graphite powder and solder is 0.01:1.
The production method of the medical calm, includes the following steps：
Step 1：The production of caliper and jaw makes jaw with high-carbon steel, makes caliper with middle low carbon steel and presets on caliper
Jaw interconnecting piece；
Step 2：Jaw is fixed on the jaw interconnecting piece on caliper by laser spot welding；And it is pasted in jaw and jaw interconnecting piece
There are weld gaps at conjunction；
Step 3：It is graphitized the preparation of solder, nano-graphite dispersion liquid is sprayed on solder matrix and forms graphitization solder；
Step 4：Inside the weld gap that the graphitization solder that step 3 obtains is inserted into step 2 between jaw and caliper；
Step 5：The jaw and caliper for being coated with graphitization solder are put into vacuum brazing device and are brazed, by jaw and caliper
It is welded into an entirety；The temperature of vacuum brazing is 1000 DEG C, and the retention time is 10 min at vacuum degree≤10-3Pa；
Step 6：Localized hyperthermia's quenching treatment is carried out to the jaw of medical calm in step 5, ultimately forms finished product medical calm.
Embodiment 2
In Fig. 4, embodiment shown in fig. 5, a kind of medical calm, including caliper 1 and jaw 2, jaw 2 pass through laser spot welding and pincers
Body 1 is fixedly connected, and there are weld gap 3,3 internal coat of weld gap has graphitization solder 4, pincers for jaw 2 and 1 joint place of caliper
Mouth 2 and caliper 1 are bonded as one by vacuum brazing.Jaw 2 is friction clamp mouth.Caliper 1 is middle low carbon steel material members；Jaw 2
For high-carbon steel material component.Caliper 1 includes binding clip 5 and clamp handle 6, and binding clip 5 and clamp handle 6 pass through plug-in type detachable connection.
Clamp handle 6 is telescopic structure, and clamp handle 6 includes grip part 7 and pars contractilis 8, and pars contractilis 8 is actively socketed on grip part 7
Inside, and the clamping structure 9 by being arranged on pars contractilis 8 and grip part 7 positions；Binding clip 5 is detachably connected with pars contractilis 8.
Grip part is annular structure, and pars contractilis is then straightway, is square structure.
Graphitization solder 4 includes solder matrix 10 and the nano graphite powder 11 being sprayed on outside solder matrix 10；Nanometer stone
The mass ratio of ink powder 11 and solder matrix 10 is 0.01~0.05:1.
It is graphitized the preparation of solder 4：
（1）The preparation of nano-graphite dispersion liquid：In parts by weight, component includes 1.5 parts of natural graphites, 0.25 part of permanganic acid
Potassium, 1.9 parts of fuming nitric aicds, 0.5 part of oxalic acid, by above-mentioned component in 40 DEG C of 40 min of progress intercalation；Obtained intercalation is anti-
It answers mixture to be washed with deionized water to neutrality, and is dried at 70 DEG C, keep the temperature 15 min under 1000 DEG C of high temperature, expansion fossil is made
Ink powder；Expansion fossil ink powder obtained and dispersing agent are sufficiently mixed and are formed uniformly nano-graphite dispersion liquid.It is swollen in the present embodiment
It is to form nano-graphite dispersion by constantly crushing and being uniformly mixed in supersonic wave cleaning machine that swollen fossil ink powder is filled with dispersing agent
Liquid.
（2）Solder is composed of the following components：Cr, B, Si, Fe, La and Ni, each component is in parts by weight：8.0 parts of Cr：,
3.5 parts of B, 5.0 parts of Si, 3.5 parts of Fe, 0.5 part of La, 79.5 parts of Ni.
（3）The nano graphite powder specific surface area that nano-graphite dispersion liquid is formed after spraying on solder is 51000cm2/g,
The mass ratio of nano graphite powder and solder is 0.05:1.
The production method of the medical calm, includes the following steps：
Step 1：The production of caliper and jaw makes jaw with high-carbon steel, makes caliper with middle low carbon steel and presets on caliper
Jaw interconnecting piece；
Step 2：Jaw is fixed on the jaw interconnecting piece on caliper by laser spot welding；And it is pasted in jaw and jaw interconnecting piece
There are weld gaps at conjunction；
Step 3：It is graphitized the preparation of solder, nano-graphite dispersion liquid is sprayed on solder matrix and forms graphitization solder；
Step 4：Inside the weld gap that the graphitization solder that step 3 obtains is inserted into step 2 between jaw and caliper；
Step 5：The jaw and caliper for being coated with graphitization solder are put into inert gas brazing device and are brazed, by jaw and
Caliper is welded into an entirety；The temperature of inert gas soldering is 1200 DEG C, retention time 50min；
Step 6：Localized hyperthermia's quenching treatment is carried out to the jaw of medical calm in step 5, ultimately forms finished product medical calm.
Embodiment 3：
It is graphitized the preparation of solder 4：（1）The preparation of nano-graphite dispersion liquid：In parts by weight, component includes 0.75 part natural
Graphite, 0.225 part of potassium permanganate, 1.7 parts of fuming nitric aicds, 0.475 part of oxalic acid, by above-mentioned component in 37.5 DEG C of progress intercalations
37.5 min；Obtained intercalation mixture is washed with deionized water to neutrality, and is dried at 67.5 DEG C, 1000 DEG C of high temperature
Expansion fossil ink powder is made in 12.5 min of lower heat preservation；Expansion fossil ink powder obtained is sufficiently mixed with dispersing agent and is formed uniformly
Nano-graphite dispersion liquid.Expanding fossil ink powder in the present embodiment and filling with dispersing agent is by constantly crushing in supersonic wave cleaning machine
And it is uniformly mixed and forms nano-graphite dispersion liquid.
（2）Solder is composed of the following components：Cr, B, Si, Fe, La and Ni, each component is in parts by weight：7.07 part Cr：,3
Part B, 4.5 parts of Si, 3 parts of Fe, 0.3 part of La, 82 parts of Ni.
（3）The nano graphite powder specific surface area that nano-graphite dispersion liquid is formed after spraying on solder is 700cm2/g, is received
The mass ratio of rice graphite powder and solder is 0.03:1.
The production method of the medical calm, includes the following steps：
Step 1：The production of caliper and jaw makes jaw with high-carbon steel, makes caliper with middle low carbon steel and presets on caliper
Jaw interconnecting piece；
Step 2：Jaw is fixed on the jaw interconnecting piece on caliper by laser spot welding；And it is pasted in jaw and jaw interconnecting piece
There are weld gaps at conjunction；
Step 3：It is graphitized the preparation of solder, nano-graphite dispersion liquid is sprayed on solder matrix and forms graphitization solder；
Step 4：Inside the weld gap that the graphitization solder that step 3 obtains is inserted into step 2 between jaw and caliper；
Step 5：The jaw and caliper for being coated with graphitization solder are put into vacuum brazing device and are brazed, by jaw and caliper
It is welded into an entirety；The temperature of vacuum brazing is 1100 DEG C, in vacuum degree≤10-3The Pa lower retention time is 30min.
Step 6：Localized hyperthermia's quenching treatment is carried out to the jaw of medical calm in step 5, ultimately forms finished product medical calm.
Medical calm in above-described embodiment and preparation method thereof makes jaw and caliper using dissimilar metal, and makes
It is graphitized solder, jaw is first fixed on the reserved position of caliper with laser spot welding, graphitization solder is then coated on jaw
It is brazed inside caliper weld gap, then by medical calm loading vacuum or inert gas brazing device, as soldering fills
When setting middle temperature and being increased to the brazing temperature value of setting, graphitization brazing filler metal melts at liquid and are filled up completely weld gap, with pincers
Mouthful and caliper occur metallurgical chemistry reaction, during the reaction due to solder surface graphite powder presence, in the welding process
It is to be carried out with a kind of melting welding of microcell, several microns to more than ten microns or less interfaces of both dissimilar metals of caliper and jaw
It carries out, is not related to the structure of its deep layer, so the generation of dissimilar metal surface Carbon Migration Phenomenon can be inhibited effectively, passes through stone
Blackization effect effectively inhibits the formation of carbide, to avoid carbon diffusion from forming diffusion layer, so that connecting more between Dissimilar Steels
Persistently and there is stronger plasticity, subsequent during cooling, liquid graphitization solder is linked as jaw and caliper
One entirety realizes welding, and the welding, almost without weld seam, it is firm to weld, and will not fall off.
By normal solder graphitization processing, effectively inhibit the formation of carbide by graphitizing, so that carbon be avoided to move
Shifting forms diffusion layer, so that weldering connection is more longlasting between different metal materials and has stronger plasticity, rare earth element activity
Height, atomic radius are big, can play the role of rotten, purification, thinning microstructure, the Ni-based pricker of powdery prepared using mechanical alloying
Material, and rare-earth elements of lanthanum is mixed, solder and base material wetability are improved, there is good wetability and seam-filling ability, welds boundary
The smooth densification in face, is well combined.
Claims (10)
1. a kind of medical calm, including caliper（1）And jaw（2）, it is characterised in that：The jaw（2）By laser spot welding with
Caliper（1）It is fixedly connected, the jaw（2）With caliper（1）There are weld gaps for joint place（3）, the weld gap（3）
Internal coat has graphitization solder（4）, the jaw（2）And caliper（1）It is bonded as one by vacuum brazing.
2. a kind of medical calm according to claim 1, it is characterised in that：The caliper（1）For middle low carbon steel material structure
Part；The jaw（2）For high-carbon steel material component.
3. a kind of medical calm according to claim 1, it is characterised in that：The caliper includes binding clip（5）And clamp handle
（6）, the binding clip（5）With clamp handle（6）It is detachably connected by plug-in card or screw-type.
4. a kind of medical calm according to claim 3, it is characterised in that：The clamp handle（6）It is described for telescopic structure
Clamp handle（6）Including grip part（7）And pars contractilis（8）, the pars contractilis（8）It is actively socketed on grip part（7）Inside, and lead to
It crosses and is arranged in pars contractilis（8）The grip part and（7）On clamping structure（9）Positioning；The binding clip（5）With pars contractilis（8）It is removable
Unload connection.
5. a kind of medical calm according to any one of claims 1 to 4, it is characterised in that：It is graphitized solder（4）Including pricker
Expect matrix（10）Be sprayed on solder matrix（10）External nano graphite powder（11）；The nano graphite powder（11）With solder
Matrix（10）Mass ratio be 0.01~0.05:1.
6. a kind of production method of medical calm, it is characterised in that include the following steps：
Step 1：The production of caliper and jaw makes jaw with high-carbon steel, makes caliper with middle low carbon steel and presets on caliper
Jaw interconnecting piece；
Step 2：Jaw is fixed on the jaw interconnecting piece on caliper by laser spot welding；And it is pasted in jaw and jaw interconnecting piece
There are weld gaps at conjunction；
Step 3：It is graphitized the preparation of solder, nano-graphite dispersion liquid is sprayed on solder matrix and forms graphitization solder；
Step 4：Inside the weld gap that the graphitization solder that step 3 obtains is inserted into step 2 between jaw and caliper；
Step 5：It is coated with the jaw of graphitization solder and caliper is put into vacuum or inert gas brazing device is brazed, it will
Jaw and caliper are welded into an entirety；
Step 6：Localized hyperthermia's quenching treatment is carried out to the jaw of medical calm in step 5, ultimately forms finished product medical calm.
7. a kind of production method of medical calm according to claim 6, it is characterised in that：Nano-graphite disperses in step 3
The preparation of liquid：In parts by weight, component include 0.5~1.5 part of natural graphite, 0.2~0.25 part of potassium permanganate, 1.5~1.9
Above-mentioned component is carried out the reaction min of 35 min~40 by part fuming nitric aicd, 0.45~0.5 part of oxalic acid at 35 DEG C~40 DEG C；Will
To reaction mixture be washed with deionized water to neutrality, and dried at 65 DEG C~70 DEG C, keep the temperature 10 min under 1000 DEG C of high temperature
Expansion fossil ink powder is made in~15 min；Expansion fossil ink powder obtained and dispersing agent are sufficiently mixed and are formed uniformly a nanometer stone
Black dispersion liquid.
8. a kind of production method of medical calm according to claim 6, it is characterised in that：Solder in the step 3 by
Following components composition：Cr, B, Si, Fe, La and Ni, each component is in parts by weight：6.0~8.0 parts of Cr：, 2.75~3.5 parts of B,
4.0~5.0 parts of Si, 2.5~3.5 parts of Fe, 0.1~0.5 part of La, 79.5~84.65 parts of Ni.
9. a kind of production method of medical calm according to claim 6, it is characterised in that：Nano-graphite disperses in step 3
The nano graphite powder specific surface area that liquid is formed after spraying on solder is 500 cm2/ g~1000cm2/ g, the nano-graphite
The mass ratio of powder and solder is 0.01~0.05:1.
10. a kind of production method of medical calm described according to claim 6 or 7 or 8 or 9, it is characterised in that：Vacuum brazing
Temperature is 1000 DEG C~1200 DEG C, in vacuum degree≤10-3The Pa lower retention time is 10 min~50min.
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| JPH0584363A (en) * | 1991-08-20 | 1993-04-06 | Mitsubishi Materials Corp | Scissors and manufacture thereof |
| DE19733035A1 (en) * | 1997-07-31 | 1999-02-18 | Aesculap Ag & Co Kg | Scissors for medical use |
| CN1884060A (en) * | 2006-07-11 | 2006-12-27 | 河北农业大学 | Process for preparing expandable graphite with high reference expansion temperature |
| CN104786027A (en) * | 2015-04-28 | 2015-07-22 | 杭州创亚医疗器械有限公司 | BG42 stainless steel medical clamp and manufacturing method thereof |
| CN105662536A (en) * | 2016-01-30 | 2016-06-15 | 韩成冰 | Extendable lamplight tweezers for maxillofacial surgery |
| CN208942289U (en) * | 2018-06-11 | 2019-06-07 | 浙江亚通焊材有限公司 | A kind of medical calm |
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2018
- 2018-06-11 CN CN201810595795.3A patent/CN108836430B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0584363A (en) * | 1991-08-20 | 1993-04-06 | Mitsubishi Materials Corp | Scissors and manufacture thereof |
| DE19733035A1 (en) * | 1997-07-31 | 1999-02-18 | Aesculap Ag & Co Kg | Scissors for medical use |
| CN1884060A (en) * | 2006-07-11 | 2006-12-27 | 河北农业大学 | Process for preparing expandable graphite with high reference expansion temperature |
| CN104786027A (en) * | 2015-04-28 | 2015-07-22 | 杭州创亚医疗器械有限公司 | BG42 stainless steel medical clamp and manufacturing method thereof |
| CN105662536A (en) * | 2016-01-30 | 2016-06-15 | 韩成冰 | Extendable lamplight tweezers for maxillofacial surgery |
| CN208942289U (en) * | 2018-06-11 | 2019-06-07 | 浙江亚通焊材有限公司 | A kind of medical calm |
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Address after: No. 372, Jinpeng Street, Sandun Industrial Zone, Xihu District, Hangzhou, Zhejiang, 310012 Patentee after: Zhejiang Yatong New Materials Co.,Ltd. Patentee after: HANGZHOU DTC MEDICAL APPARATUS CO.,LTD. Address before: No. 372, Jinpeng Street, Sandun Industrial Zone, Xihu District, Hangzhou, Zhejiang, 310012 Patentee before: ZHEJIANG ASIA GENERAL SOLDERING & BRAZING MATERIAL Co.,Ltd. Patentee before: HANGZHOU DTC MEDICAL APPARATUS CO.,LTD. |