CN2575649Y - Plastic ball indentation hardometer - Google Patents
Plastic ball indentation hardometer Download PDFInfo
- Publication number
- CN2575649Y CN2575649Y CN 02244622 CN02244622U CN2575649Y CN 2575649 Y CN2575649 Y CN 2575649Y CN 02244622 CN02244622 CN 02244622 CN 02244622 U CN02244622 U CN 02244622U CN 2575649 Y CN2575649 Y CN 2575649Y
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- CN
- China
- Prior art keywords
- gas
- tube road
- melt
- aluminium alloy
- introduction tube
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Abstract
The utility model discloses a hydrogen testing probe having high speed and high stability used for aluminum melts and aluminium alloy melts, a gas lead-in pipeline (2) of which extends from the end part of a filter (5), which is covered with a porous ceramic filtering layer (8a). The utility model has the advantages of high sampling speed, high reliability, strong stability, long service life, etc.
Description
Affiliated technical field
The utility model relates to a kind of aluminum melt and the employed hydrogen probe of hydrogen content, in aluminium alloy melt surveying instrument.
Background technology
In aluminium and aluminium alloy processing or casting process, need to measure and control the content of objectionable impurities one hydrogen in the melt (being aluminium liquid or aluminum alloy melt).The existing employed sample rate of hydrogen meter device hydrogen probe faster mainly is the Telegas probe, will pop one's head in during measurement and insert in the melt, charges into N through the gas introduction tube road in melt
2, owing to import N
2In H
2Concentration is lower than H in the melt
2There is concentration difference in concentration, so the H in the melt
2To N
2In diffuse to form N
2-H
2Combination gas, and by the gas eduction tube road extraction of popping one's head in, the N of extraction
2-H
2Combination gas charges into and spreads mixing in the melt, when reaching balance through repeatedly circulating, promptly finishes the H of melt
2The concentration sampling.Because the H in the melt
2Be direct N in melt
2Bubble exchanges diffusion, and the exchange interfacial area is big, and diffusion is rapid, the sample rate height.But because the opening in its gas introduction tube road directly contacts with melt, very easily stopped up by melt, cause probe not work, reliability is low, poor stability, and serviceable life is low; Reach and the immiscible requirement of aluminium for satisfying secluding air in addition, its gas conduit, gas skirt all adopt ceramic of compact to constitute; Pop one's head in not that the time spent is in the normal temperature state, use in the melt that then inserts more than 700 ℃, under rapid heat cycle condition repeatedly, the parts such as gas conduit that ceramic of compact constitutes very easily embrittlement damage, and the serviceable life that also causes popping one's head in is low.
Summary of the invention
The purpose of this utility model just provides a kind of aluminum melt and aluminium alloy melt is used at a high speed, the high stable hydrogen probe, and this kind hydrogen probe sample rate is fast, simultaneously reliability height, strong, the long service life of stability.
The utility model is for solving its technical matters, the technical scheme that is adopted is: a kind of aluminum melt and aluminium alloy melt are used at a high speed, the high stable hydrogen probe, contain gas conduit, inner gas introduction tube road and the gas eduction tube road that is provided with of gas conduit, gas skirt is arranged at the gas conduit bottom, in in the gas skirt, porous ceramic filter is arranged at the bottom, the gas introduction tube road then stretches out porous ceramic filter, and its design feature is: the gas introduction tube road stretches out the outer end of porous ceramic filter and is coated with the porous ceramics filtering layer.
The end that the gas introduction tube road stretches out porous ceramic filter is that mouth of pipe place covers the porous ceramics filtering layer, both can block melt and enter, and prevents that melt from stopping up the mouth of pipe, makes the reliability height of probe, stability strong, and prolong serviceable life greatly; This porous ceramic layer approaches but not big porous ceramic bodies simultaneously, can guarantee that again the N2 that imports passes this thin porous layer smoothly and enters melt, make N2 form bubble in melt and H2 spreads exchange, its exchange diffusion area is big, diffusion is finished rapidly, and sample rate is fast.
The non-end portion that the above-mentioned gas import pipe is stretched out filtrator also can be coated with the porous ceramics filtering layer.
The non-end portion that above-mentioned gas introduction tube road stretches out porous ceramic filter can also be coated with ceramic layer.
The air intake opening in above-mentioned gas eduction tube road is located at the top in the gas skirt.So only have the gas introduction tube road to stretch out porous ceramic filter, the gas conduit pipe portion of outer gaseous diffusion exchange place of gas skirt diminishes, and makes N2 become big to H2 diffusion swapace, increases the exchange rate of propagation, thereby has further improved the sample rate of probe.
The main body of above-mentioned gas conduit is a metal, and its outer wall is coated with ceramic layer.The ceramic layer that outer wall applies makes the gas conduit metal master not by the aluminum melt corrosion, because the gas conduit main body is a metal, can adapt to repeatedly the service condition of rapid heat cycle again fully simultaneously, and can embrittlement not damage, and further prolongs the serviceable life of probe.
Above-mentioned gas skirt is that pottery constitutes, its shape be spherical or cone shape cylindrical or prismatic.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the sectional structure synoptic diagram of the utility model embodiment one.
Fig. 2 is the sectional structure synoptic diagram of the utility model embodiment two.
Fig. 3 is the sectional structure synoptic diagram of the utility model embodiment three.
Fig. 1 illustrates, the utility model embodiment one specifically constitutes: a kind of aluminum melt and aluminium alloy melt are used at a high speed, the high stable hydrogen probe, contain gas conduit 1, gas conduit 1 inner gas introduction tube road 2 and the gas eduction tube road 3 that is provided with, gas skirt 4 is arranged at gas conduit 1 bottom, in in the gas skirt 4, porous ceramic filter 5 is arranged at the bottom, 2 in gas introduction tube road stretches out porous ceramic filter 5, and the end that gas introduction tube road 2 stretches out porous ceramic filter 5 is coated with porous ceramics filtering layer 8a.
The non-end portion that gas introduction tube road 2 stretches out porous ceramic filter 5 also is coated with porous ceramics filtering layer 8.
The air intake opening 7 in gas eduction tube road 3 is located at the top in the gas skirt 4.
The main body of gas conduit 1 is a metal, and its outer wall is coated with ceramic layer 6.
In this example, porous ceramic filter 5 threes of porous ceramics filtering layer 8, gas skirt 4 bottoms of the porous ceramics filtering layer 8a of porous ceramic filter 5 ends, non-end portion link to each other and material is identical because gas introduction tube road 2 stretches out, so when implementing, the three can be incorporate one-piece construction, is more convenient for like this making and assembling.Certainly because the material of gas skirt is a pottery, can be that porous ceramics also can not be the pottery of porous, when gas skirt 4 is selected porous ceramics for use, then gas skirt 4, porous ceramic filter 5, two porous ceramics filtering layers 8,8a four parts also can be made into incorporate one-piece construction, both be convenient to make and installed, also more convenient H2 filters from porous ceramics portion and enters in the gas skirt, and further accelerating diffusion is sample rate.
Fig. 2 illustrates, and the difference of the formation of the utility model embodiment two and embodiment one is: gas skirt 4 be shaped as taper shape; The non-end portion that gas introduction tube road 2 stretches out porous ceramic filter 5 is coated with ceramic layer 6a.The material that this ceramic layer 6a adopts is not a porous ceramics, but the pottery of few hole or atresia.All the other structures of this example are then identical with embodiment one.
Fig. 3 illustrates, and the difference of the formation of the utility model example three and embodiment one is: being shaped as of gas skirt 4 is cylindrical or prismatic, and all the other structures are then identical with embodiment one.
When the utility model was implemented, the shape of gas skirt 4 is other different shape also, as long as the bottom has opening to be convenient to gas and enters, inside can form a gas collection cavity and all can.
Certainly the structure in the gas introduction tube road 2 of the utility model embodiment one cooperates with the gas skirt 4 of different shape; Perhaps any embodiment of cooperating with the different shape gas skirt of the structure of the gas introduction tube 2 of embodiment two all is embodiments of the present utility model, belongs to protection domain of the present utility model.
Claims (6)
1, a kind of aluminum melt and aluminium alloy melt high speed, high stable hydrogen probe, contain gas conduit (1), inner gas introduction tube road (2) and gas eduction tube road (3) that are provided with of gas conduit (1), gas skirt (4) is arranged at gas conduit (1) bottom, in in the gas skirt (4), porous ceramic filter (5) is arranged at the bottom, gas introduction tube road (2) then stretches out porous ceramic filter (5), it is characterized in that: the end that described gas introduction tube road (2) stretches out porous ceramic filter (5) is coated with porous ceramics filtering layer (8a).
2, a kind of aluminum melt according to claim 2 and aluminium alloy melt high speed, high stable hydrogen probe, it is characterized in that: the non-end portion that described gas introduction tube road (2) stretches out filtrator (5) also is coated with porous ceramics filtering layer (8).
3, a kind of aluminum melt according to claim 1 and aluminium alloy melt high speed, high stable hydrogen probe, it is characterized in that: the non-end portion that described gas introduction tube road (2) stretches out porous ceramic filter (5) is coated with ceramic layer (6a).
4, a kind of aluminum melt according to claim 1 and aluminium alloy melt high speed, high stable hydrogen probe, it is characterized in that: the air intake opening (7) in described gas eduction tube road (3) is located at the top in the gas skirt (4).
5, a kind of aluminum melt according to claim 1 and aluminium alloy melt high speed, high stable hydrogen probe, it is characterized in that: the main body of described gas conduit (1) is a metal, its outer wall is coated with ceramic layer (6).
6, according to claim 1 or 2 or 3 or 4 or 5 described a kind of aluminum melts and aluminium alloy melt with at a high speed, the high stable hydrogen probe, it is characterized in that: described gas skirt (4) constitutes for pottery, its shape be spherical or cone shape cylindrical or prismatic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02244622 CN2575649Y (en) | 2002-11-04 | 2002-11-04 | Plastic ball indentation hardometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02244622 CN2575649Y (en) | 2002-11-04 | 2002-11-04 | Plastic ball indentation hardometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2575649Y true CN2575649Y (en) | 2003-09-24 |
Family
ID=33716459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02244622 Expired - Fee Related CN2575649Y (en) | 2002-11-04 | 2002-11-04 | Plastic ball indentation hardometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2575649Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101344465A (en) * | 2007-07-10 | 2009-01-14 | 贺利氏电子耐特国际股份公司 | Device for gathering gases in metal melts and corresponding measuring method |
-
2002
- 2002-11-04 CN CN 02244622 patent/CN2575649Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101344465A (en) * | 2007-07-10 | 2009-01-14 | 贺利氏电子耐特国际股份公司 | Device for gathering gases in metal melts and corresponding measuring method |
| CN101344465B (en) * | 2007-07-10 | 2013-03-20 | 贺利氏电子耐特国际股份公司 | Device for gathering gases in metal melts and corresponding measuring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |