CN103146954A - 205-DEG C lead-free low-temperature alloy for fuse burned-out core and preparation method thereof - Google Patents
205-DEG C lead-free low-temperature alloy for fuse burned-out core and preparation method thereof Download PDFInfo
- Publication number
- CN103146954A CN103146954A CN 201310094959 CN201310094959A CN103146954A CN 103146954 A CN103146954 A CN 103146954A CN 201310094959 CN201310094959 CN 201310094959 CN 201310094959 A CN201310094959 A CN 201310094959A CN 103146954 A CN103146954 A CN 103146954A
- Authority
- CN
- China
- Prior art keywords
- temperature alloy
- low
- lead
- free low
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Fuses (AREA)
Abstract
The invention relates to a 205-DEG C lead-free low-temperature alloy for a fuse burned-out core and a preparation method thereof. The 205-DEG C lead-free low-temperature alloy comprises the following raw materials in percentage by weight: 2.8%-3.2% of Ag, 6.5%-7.5% of In, 1.8%-.2% of Bi and the balance being Sn. The preparation method of the 205-DEG C lead-free low-temperature alloy comprises the following preparation steps of: heating metal tin; adding metal Ag at 280-320 DEG C when tin is molten; adding bismuth after the metal sliver is molten down; adding indium after bismuth is molten down; conventionally adding a degassing agent for degassing after indium is molten down; and removing the slag and casting. The lead-free low-temperature alloy containing Sn, Ag, In and Bi disclosed by the invention is used for manufacturing a burned-out core of a temperature fuse, and the melting point of the lead-free low-temperature alloy is 205 DEG C +/-2 DEG C. The low-temperature alloy is eutectic alloy which has the characteristics of good composition uniformity, narrow melting point range, low cost and the like, and is a lead-free environment-friendly material. Moreover, the 205-DEG C lead-free low-temperature alloy has good social benefits and economic benefits.
Description
Technical field
The invention belongs to the alloy field, relate to the lead-free low-temperature alloy, especially a kind of 205 ℃ of fuse burn-out core lead-free low-temperature Alloy And Preparation Methods.
Background technology
Fusible core is the heart of Thermal Cutoffs, be the technological core of Thermal Cutoffs production technique, traditional Thermal Cutoffs mostly is tinsel, as a kind of material-lead that is harmful to environment, be detrimental to health in production and use procedure, environment is had great pollution.
Low-temperature alloy can be used for the protection of electronic circuit in electron trade, multiplex fusing core in making Thermal Cutoffs.It is that company is lived by thousand of the alpha of the U.S. and Japan that current low-temperature alloy leads the production firm of world's modern technique.
According to the retrieval, find the following patent documentation relevant to the application, wherein CN102296208A discloses a kind of lead-free low-temperature alloy of the fusing core for making Thermal Cutoffs, and its raw material consists of and weight percentage ranges is respectively: Bi:34%-36%; Zn:3.5%-4.5%; Sn: surplus; The step of its preparation method is: metallic tin is put into stainless crucible, heat on electric furnace, after the tin fusing, under 250-280 ℃, add metallic zinc, fusion clear after, then add bismuth metal, air release agent is degassed, slagging-off to carry out conventional adding after melting clearly, is cast into the low-temperature alloy rod that needs size.Patent documentation CN102912204A discloses a kind of lead-free low-temperature Alloy And Preparation Method and application, and this low-temperature alloy is comprised of tin, bismuth, three kinds of metals of indium, and each weight percentages of components is as follows: tin 15-17%; Bismuth 32-34%; Surplus is indium, and its preparation methods steps is: ⑴ melts tin; ⑵ melt bismuth; ⑶ melt indium; ⑷ degassed; ⑸ casting.Patent documentation CN101812623A discloses a kind of novel environment-friendly low-temperature alloy and preparation method thereof, and it mainly is made of indium, tin, bismuth, zinc, silver metal, on the basis that is associated gold at Bi-In-Sn, adds Zn, the metals such as Ag.
Front two pieces in above-mentioned patent documentation is the technical scheme of protection of the applicant application of this patent; from the application's other part be the composition of its alloy and component content different; the fusing point of final alloy is different; belong to different products; the 3rd piece of file is other applicants' technical scheme; have larger difference with the application's technical scheme, its product fusing point and component content are all different.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, provide a kind of melting range narrow, cost is low, 205 ℃ of fuse burn-out core lead-free low-temperature alloys of leadless environment-friendly, the preparation method of this simple, easy to operate alloy of step is provided simultaneously, and the fuse burn-out core of this alloy preparation, the fusing point of the low-temperature alloy of present method preparation is 205 ± 2 ℃.
The objective of the invention is to be achieved through the following technical solutions:
A kind of 205 ℃ of fuse burn-out core lead-free low-temperature alloys, its raw material consists of and weight percentage ranges is respectively:
Ag：2.8%-3.2%；
In：6.5%-7.5%；
Bi：1.8%-2.2%；
Sn: surplus.
And its raw material consists of and weight percent is:
Ag：3%；
In：7%；
Bi：2%；
Sn：88%。
A kind of preparation method of 205 ℃ of fuse burn-out core lead-free low-temperature alloys, preparation method's step is:
⑴ melt tin: by weight ratio metallic tin is put into heating container, be heated to the tin fusing;
⑵ casting: under 280-320 ℃, add argent, fusion clear after, then add bismuth; After bismuth is molten clear, then add indium, moltenly add that air release agent is degassed, slagging-off after clear, be cast into the low-temperature alloy rod that needs size.
A kind of 205 ℃ of fuse burn-out cores carry out extrusion molding with the low-temperature alloy rod, and concrete steps are: with extrusion machine extruding low-temperature alloy rod, the low-temperature alloy silk of extruding corresponding size uses as the fusing core of Thermal Cutoffs.
Advantage of the present invention and positively effect are:
1, the lead-free low-temperature alloy that contains Sn, Ag, In, Bi of the present invention's preparation, ratio by the various compositions of meticulous adjusting, make the fusing point of the alloy of preparing reach 205 ± 2 ℃, melting range is narrow, this low-temperature alloy is eutectic alloy, have the characteristics such as homogeneous chemical composition, cost are low, be used for making the fusing core of Thermal Cutoffs, safe and reliable.
2, low-temperature alloy of the present invention is the leadless environment-friendly material, can replace traditional tinsel, and its composition is not leaded, is therefore the leadless environment-friendly material, has good social benefit and economic benefit.
Embodiment
Further illustrate the present invention below in conjunction with specific embodiment; It is emphasized that: to those skilled in the art, can be improved according to the above description or conversion, and all these improve and conversion all should belong to the protection domain of claims of the present invention.
A kind of 205 ℃ of fuse burn-out core lead-free low-temperature alloys, its concrete composition is Sn
88Ag
3In
7Bi
2, concrete composition and weight proportion are as follows:
Ag：3%；
In：7%；
Bi：2%；
Sn：88%。
Can also adopt following proportioning, scope sees Table, and summation is 100%
| Chemical composition % | Sn | Ag | In | Bi |
| 100% | 87-89 | 2.8-3.2 | 6.5-7.5 | 1.8-2.2 |
A kind of 205 ℃ of fuse burn-out core lead-free low-temperature alloys, step is as follows:
⑴ melt tin: by weight ratio metallic tin is put into stainless crucible, be heated to the tin fusing on electric furnace;
⑵ casting: under 280-320 ℃, add argent, fusion clear after, then add bismuth; After bismuth is molten clear, then add indium, moltenly add that air release agent is degassed, slagging-off after clear, being cast into diameter is the low-temperature alloy rod of 25mm,
⑶ extrusion molding: with the vertical extruders of 100 tons extruding, extrusion temperature is 80 ℃, and mould is the 5 holes extruding of 25mm, and the low-temperature alloy silk of extruding diameter and be 1.0mm uses as the fusing core of Thermal Cutoffs.
The metallic tin that the embodiment of the present invention is used, silver, bismuth, indium and air release agent are the known products of the industry.
The fusing point that confirms by experiment the alloy prepare reaches 205 ± 2 ℃.
Claims (4)
1. one kind 205 ℃ fuse burn-out core lead-free low-temperature alloys is characterized in that: its raw material consists of and weight percentage ranges is respectively:
Ag：2.8%-3.2%；
In：6.5%-7.5%；
Bi：1.8%-2.2%；
Sn: surplus.
2. 205 ℃ of fuse burn-out core lead-free low-temperature alloys according to claim 1 is characterized in that: its raw material consists of and weight percent is:
Ag：3%；
In：7%；
Bi：2%；
Sn：88%。
3. the preparation method of 205 ℃ of fuse burn-out core lead-free low-temperature alloys as claimed in claim 1, it is characterized in that: preparation method's step is:
⑴ melt tin: by weight ratio metallic tin is put into heating container, be heated to the tin fusing;
⑵ casting: under 280-320 ℃, add argent, fusion clear after, then add bismuth; After bismuth is molten clear, then add indium, moltenly add that air release agent is degassed, slagging-off after clear, be cast into the low-temperature alloy rod that needs size.
4. 205 ℃ of fuse burn-out cores, it is characterized in that: the low-temperature alloy rod that claim 3 is prepared carries out extrusion molding, concrete steps are: with extrusion machine extruding low-temperature alloy rod, extrude the low-temperature alloy silk of corresponding size as the fusing core of Thermal Cutoffs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310094959 CN103146954A (en) | 2013-03-22 | 2013-03-22 | 205-DEG C lead-free low-temperature alloy for fuse burned-out core and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201310094959 CN103146954A (en) | 2013-03-22 | 2013-03-22 | 205-DEG C lead-free low-temperature alloy for fuse burned-out core and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103146954A true CN103146954A (en) | 2013-06-12 |
Family
ID=48545268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201310094959 Pending CN103146954A (en) | 2013-03-22 | 2013-03-22 | 205-DEG C lead-free low-temperature alloy for fuse burned-out core and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103146954A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756230A (en) * | 2016-12-01 | 2017-05-31 | 海南科技职业学院 | A kind of preparation method of novel environment friendly low-temperature alloy |
-
2013
- 2013-03-22 CN CN 201310094959 patent/CN103146954A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756230A (en) * | 2016-12-01 | 2017-05-31 | 海南科技职业学院 | A kind of preparation method of novel environment friendly low-temperature alloy |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102626837B (en) | Moderate temperature copper-based solder and preparation method thereof | |
| CN103352137B (en) | For the copper alloy with high strength and high conductivity and preparation method thereof of power switch spring contact | |
| CN101456103A (en) | Leadless soft soldering material and manufacture method thereof | |
| CN102862003A (en) | Silver-free copper based solder and preparation method thereof | |
| CN103849796A (en) | Aluminum-alloy 6262 modified alloy material | |
| CN103060605A (en) | Novel lead-free environmentally-friendly high-strength wearable copper-based alloy rod and preparation method thereof | |
| CN104625471A (en) | Cadmium-free silver filler metal for vacuum electron brazing and preparation method thereof | |
| CN103146953B (en) | 185-DEG C lead-free low-temperature alloy for fuse burned-out core and preparation method thereof | |
| CN103146955B (en) | 198-DEG C lead-free low-temperature alloy for fuse burned-out core and preparation method thereof | |
| CN103146954A (en) | 205-DEG C lead-free low-temperature alloy for fuse burned-out core and preparation method thereof | |
| CN113399859A (en) | Sn-Zn-Cu lead-free solder and preparation method thereof | |
| CN102912204A (en) | Low temperature alloy and preparation method and application thereof | |
| CN103909361A (en) | Low-silver-content cadmium-free solder | |
| CN103769762A (en) | Brazing filler alloy and preparing method thereof | |
| CN107199416A (en) | A kind of brass silver-less solder alloy | |
| CN102553960B (en) | Preparation method for tin-bismuth series alloy temperature fuse material with high plasticity | |
| CN104032169B (en) | A kind of containing cerium lead-free easy-to-cut zinc-white copper alloy material and preparation method thereof | |
| CN103173651A (en) | Lead-free low-temperature alloy for fusible core of fuse at 212 DEG C and preparation method thereof | |
| CN103146951A (en) | Lead-free low-temperature alloy with fusing point of 135+/-2 DEG C and preparation method thereof | |
| CN103146975A (en) | Lead-free low-temperature alloy having melting point of 116+/-3 DEG C and preparation method for same | |
| CN102296208A (en) | Lead-free low-temperature alloy for preparing fuse core of temperature fuse and preparation method thereof | |
| CN103146952A (en) | Lead-free low-temperature alloy having melting point of 80+/-2 DEG C and preparation method for same | |
| CN102634689A (en) | Rare earth copper alloy rod for petrochemical engineering equipment and preparation method of rare earth copper alloy rod | |
| CN103160705A (en) | Lead-free low-temperature alloy for 140-DEG C burned-out cores of fuses and preparation method of lead-free low-temperature alloy | |
| CN105033500A (en) | Silver-free brazing filler metal without overflow phenomenon during welding of copper and copper alloy and preparing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130612 |