CA1053196A - Method of packaging needlelike magnetic metal pieces - Google Patents
Method of packaging needlelike magnetic metal piecesInfo
- Publication number
- CA1053196A CA1053196A CA264,438A CA264438A CA1053196A CA 1053196 A CA1053196 A CA 1053196A CA 264438 A CA264438 A CA 264438A CA 1053196 A CA1053196 A CA 1053196A
- Authority
- CA
- Canada
- Prior art keywords
- container
- steel
- metal pieces
- needlelike
- steel fibers
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B19/00—Packaging rod-shaped or tubular articles susceptible to damage by abrasion or pressure, e.g. cigarettes, cigars, macaroni, spaghetti, drinking straws or welding electrodes
- B65B19/34—Packaging other rod-shaped articles, e.g. sausages, macaroni, spaghetti, drinking straws, welding electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Container Filling Or Packaging Operations (AREA)
- Feeding Of Articles To Conveyors (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- Inorganic Fibers (AREA)
- Hard Magnetic Materials (AREA)
Abstract
METHOD OF PACKAGING NEEDLELIKE
MAGNETIC METAL PIECES
Abstract of the disclosure In a method of packaging needlelike magnetic metal pieces, a container made of a non-magnetic material is used and a magnetic flux substantially parallel hori-zontally is produced in the container when packing or after packing the needlelike magnetic metal pieces into the container, thus causing the needlelike magnetic metal pieces in the container to be orientated and closely arranged.
MAGNETIC METAL PIECES
Abstract of the disclosure In a method of packaging needlelike magnetic metal pieces, a container made of a non-magnetic material is used and a magnetic flux substantially parallel hori-zontally is produced in the container when packing or after packing the needlelike magnetic metal pieces into the container, thus causing the needlelike magnetic metal pieces in the container to be orientated and closely arranged.
Description
s~ ,.
Back~round of` the invention The present invention relates to a method of packaging needlelike magnetic metal pieces such as ~teel ~-fibers.
Steèl fibers which are used ~or reinforcing concrete materials and the like are packaged and conve,yed in a container to a ~ite where they are used~ In thi9 ca~e, the æteel fiberæ in the packaging container are directed at random and entangled with one another~ The follow-~D ing are the chief drawbacks resulting ~rom the steel fibersbeing kept in such conditions during their transportation ~ and up to the point of the~mixing of concrete:
,1 (1) The ~oid of the packaged material is high and thus ;, the use of a largè container is required with the : . , . . ~
; resulting increase in the packaging and transporta~
tion oosts,- For instance, a container of 40 X;27 `~
, ~ X 24 cm (25.92 e) is necessary to oontain 20 Kg of , ;
- steel fibers of 0.5 X 0~5 X 30 mm,
Back~round of` the invention The present invention relates to a method of packaging needlelike magnetic metal pieces such as ~teel ~-fibers.
Steèl fibers which are used ~or reinforcing concrete materials and the like are packaged and conve,yed in a container to a ~ite where they are used~ In thi9 ca~e, the æteel fiberæ in the packaging container are directed at random and entangled with one another~ The follow-~D ing are the chief drawbacks resulting ~rom the steel fibersbeing kept in such conditions during their transportation ~ and up to the point of the~mixing of concrete:
,1 (1) The ~oid of the packaged material is high and thus ;, the use of a largè container is required with the : . , . . ~
; resulting increase in the packaging and transporta~
tion oosts,- For instance, a container of 40 X;27 `~
, ~ X 24 cm (25.92 e) is necessary to oontain 20 Kg of , ;
- steel fibers of 0.5 X 0~5 X 30 mm,
(2) Due to the~Yibrations during the transportion? the entangle~ steel ~ibers are fastened together and compacted as such, thus making it difficult to ~;
unravel the~ entangled~st~eel fibers so that the steel fibers can be used, ~hus~ it is necessary to use a separate steel fiber dispenser,
unravel the~ entangled~st~eel fibers so that the steel fibers can be used, ~hus~ it is necessary to use a separate steel fiber dispenser,
(3) During the~;transportati~n9 the steel fibers are fastened~together and compacted thus reduclng the ~ ;
entire ~olume and deterloratlng the appearance as a commodity. -~
~ - ;, .
~ ~ 2 :
3~
SU~IMARY OF 'I'~IF. INVENT[ON
It i9 the object of the present inven~ion to provide a packaging method whereby in packing needlelike magnetic metal pieces such as steel fibers, the needlelike metal pieces are packed into a container in such a manner that the needlelike metal pieces are substantially arranged in the same direction thus improving the packing ratio and moreover there is no possibility of the needlelike metal pieces being fastened to-gether tightly thus reducing the apparent volume and there is practically no need to resort to any dispensing operation at ` the time of use.
:-, . , The present invention i5 defined as a method of -~
packaging needlelike magnetic metal pieces by feeding said ;
:; :
pieces into a container made of non-magnetic material to produce a substantially parallel magnetic flux in said container ~ characterized in that said needlelike magnetic metal pieces -¦ being steel fibers for use with steel fiber reinforced concrete which contains less than 0.1% carbon and said magnetic flux being produced intermittently and at least thrice during the ;~
time in which said steel fibers are fed into said container by -~, switching off and on a current flowing in an electromagnet having a pair of opposed magnetic poles, each of said poles having a pole face substantially equal to the area of an opposite side of said container.
BRIEF DESCRIPTION OF THE DRAWING -Figure l(a) is a schematic diagram oseful for explaining ;ll a preferred embodiment of the present invention.
Figure l(b) is a schematic diagram showing the ~ -orientation of the steel fibers in a container when the ~- 30 magnetic flux is extinguished in the embodiment of Figure l~a). -~
Figure l(c) is a schematic diagram showing the ~ orientation of the steel fibe-rs in the container after the ,- :
~ , :
~. jl/ .. ` -3- ~ ~
- ~05;~9~
-~ completion of th~ packLng oE the steel fiber~ into ~he contalner in the embodiment of ~igure l(a).
Figure 2 is a schematic dlagram showing a modified form of the embodiment of Fig~re l~a).
Figure 3 is a schematic diagram showing another preferred embodiment of the present invention.
DETAIIED DESCRIPTION OF THE INVE~TION
The method of this invention will now be described with reference to the drawings. In the following des-` 1 0 , ",, ~., ,::
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crlption of the embodiments of the present invention,the needlelike magnetic metal pieces consist of steel fibers. As shown in the drawings, steel fibers 1 ar~
fed into a container 2 through a feed pipe 4 ~he container 2 is made of a non-magnetic material such as paper, wood or plaætic material. In the method of this invention, magnetic flux which is substantially parallel horizontally is produced in the container 2. ~ ~
In the e~bodiments shown in Figs. 1 and 2 the magnetic ~ --flux is produced during the time that the steel flbers are being packed into the container, while in the embodi-ment shown in Fig. ~ the maenebic ~lux is praduced a~ter the steel fibers have been packed inbo the contalner.
In the embodiment æhown in~Fig, 1, the magnetlc poles N and S of a bipolar electromagnet 3, each~having a pole~face substantially equal bo the area of each side of the eontalner 2,~are externally opposed to each other on the opposed sides o~ the container 2. The steel fibers 1 are fed from above into the container 2 through , the feed plpe 4. ` `
Firstly, wit4 a current interrupter 5 for the bipolar ; --~
electromagnet 3 turned on, when the steel fibers 1 are ` ; `
fed lnto the contalner 2 through the feed pipe 4, the steel ~`
fibers 1 are aligned and orientated in the electrode direc-tion by vlrtue of;the magnetlc flux~which~has been produced ;~
substantially parallely in t~e horizontal direction in the container 2. At this tlme~, though the steel fibers ln the container 2 are orientated in the æame direction ,: :, , as shown in ~ig. l(a), the steel fibers are not arranged ~ 5 ~
, . . .. . ... . . .
105;~ 6 ~ ~
closely as yet as shown in the Figure l(a). Though it is possible to closely pack the steel fibers together by pressing down and compressing the steel fibers, this process is not desirable since it tends to make the packaging apparatus more complicate. On the other hand, the downward movement o~ the steel fibers contacting with the inner side o~ the container 2 are impeded by the ;~
~rictional force and the steel fibers as a whole are shaped into a form having a central depression as shown in Fig. l(a). This tendency ténds to become more marked ; ~ .
with increase in the amount of steel fibers fed.
According to the present embodiment, the current interruptor 5 for interrupting the flow of ourrent in the electromagnet 3 is turned off at suitable intervals to extinguish the magnetic field in the container~2.
At this time, the feeding of the steel ~ibers is also temporarily stopped. ~When the current is~swltched off, '~
the steel~fibers 1 in the container 2 ~all downward in the above-mentioned ~orm~and settle into a closely arranged form with a slight depression formed in the central portion as shown in Fig. l(b). It is necessary to switch of~ the current only for a very short period o~
time. ~hereafter, the current lnterrupter 5 is turned on again and the feeding of the steel fibers is resumed ~.
so that the newly fed steel fibers fill the previously formed depression and are~further arranged and orientated ~
thereon in the~like manner. ~ ~hls process is repeated ~`
to ~eed the stael flbers into the container 2 until the ;~
container 2 is filled wlth the steel fibers.
.
::
:
i3~6 The resulting condition is shown in Fig. l(c). During the time interval between the beginning and end of feed-ing of the steel Eibers~l, it is necessary to turn off and on the current flow at least twice. If the cùrrent flow is not turned off and on at all or the current flow is turned off and on only once, the resulting central depression will be so great that it is impossible to fill the container with the steel fibers which are arranged closely enough on the whole.
The second embodiment shqwn in Fig. 2 differs from the embodiment of Fig. 1 in that a pair of elect~o-magnets 3a and 3b are used in place of the bipolar electro~
magnet 3. A current flow is caused bhrough the electro-magnets 3a ànd 3b and the magnetic flux which is substan-~- tially parallel horizontally is produced in the container ., .
2 from the north pole of the electromagnet 3a to the south pole of the electromaynet 3b. In this way, the distance/`-between these magnetic poles (N and S) can be easily varied in accordance with the-size of the container 2. The con-~ :
tainer 2 is placed on a weighing machine 6.
, The third embodiment shown in Fig. 3 differs from the embodiment of Fig. 1 in that after the steel fibers 1 have been ~ed into the container 2 by way of the feed pipe 4, the container 2 is transferred into the core of a cylindrical ele~omagnet 3c and the steel fibers 1 are orientated and closely arranged by means of the -magnetic flux produced in the container 2 substantially parallely in the horizontal direction. In this case, `
` forced vibrations are simultaneously caused in the contai-'~ -~ ', ' ' `,~ ~", ' ~
ph/~
. ~
~I~S319~ !
ner 2 by a vibrator 7 -thus facilitating the orientation ~-and close arrangement of the steel fibers. After the orientation of the steel fibers has been completed, the container 2 is removed ~rom the core of the cylindrical electromagnet ~c and it is then wrapped for shipping.
- In this embodiment, o~ course it is possible to use abipolar electromagnet in place of the cylindrical electro-magnet in the similar manner as in the embodiment of Fig. 1.
D Another additional feature of the embodiment shown in ~ig. 3 is the fact that the steel fibers 1 : :1 ,~ fed into the container 2 are subjected -to a preliminary ! orientation by passing them through a magnetic field , wherein the magnetic flux is~passing in the direction of I ~
movement of the~steel flbers.~ In other words,~he feed i~ ~ plpe 4 whloh is made of a non-magnetlc materlal such as -~ ~ plastic~is extended through~a cylindrical~electromagnet ~, 3d, supported on a fulcrum 8 and rnechanically vibrated ;, by a hexagonal bar 9. Thus, when the steel fibers 1 are fed through the feed plpe 4, the steeI fibers 1 are passed -throu~h the magnetic field of the electromagnet 3d in which the magnetic flux passes in the~direction of movement o~ the steel fibers and the steel fiber~ are also subjected to mechanical vibrations, with the result that the steel fibers 1 thus preliminarily orientated fall , ~; as such into the~container ~ and in this way the orlen-tation of~the steel fibers 1 in the container 2 is ensured more positively.
- With the method of this invention performed by the ~: - 8 -,:,'' :
~105i319~ii arrangements described above, there is an advantage that needlelike magnetic metal pieces such as steel ~ibers can be arranged to assume the same direction and packed ~: :
closely in the container9 reducin~ the costs of paokaging and transpor~ation, eliminating the danger of the steel fibers being fastened together tightly and deteriorating the appearance, and eliminating the necessity of using a ;
large dispenser for unraveling the æteel fibers on the ~;
site to put then in use.
Anothor advantage is that when steel fibers of soft magnetic material containing less than 0.1 ~ o~
carbon are used, the steel fibers removed ~rom the magne-tic field has practically no residual magnetism.
The steel ~ibers packaged by the method o~ this ~
invention are useful for use as reinforcing fibers for ~ ~-concrete. However, the method of this invention cannot be used.with glass~fibers9 carbon fibers,~ monel fibers~
etc., which are slmilarly usable as concrete reinforcing fibers as the steel fibers. ;~
While the method of this invention has been des-cribed as ~ainly applied -to the packagil1g of steel fibers, of cour9e the method o~ this invention can be used with other needle}ike magnetlc metal pieces, such aS 9 needles, ~ ?
nails, etc. ~ ~
.. .
Description of the prefsrred~embodlment ~ ~
.:~ : ~ : ' , , :
The following exampIe shows the results obtained ~5, by performing the~ method of this invention with the - 9 ~
- . , arrangement shown in Fig. 1.
a) Required voltage and current 160V, 3 - 4 A
b) Magnetic field 600 ~ 800 gaus~
,~
c) Size of container 24 X 1~ X 30 om d) Volume o~ container about 10 ~
e) St~el fiber TESUSA (~radename of Nippon Kokan K. K.) ' Size 0.5 X 0O5 X 30 mm Composition C = 0.05 %, Mn = 0.~ %, ~-P - 0~014 %J S = 0.013 %
~,~ f) Packed weight 20 Kg ~,~ g) Weight per unit volume 2 Kg/ e As compared with the weight per unit volume of : ~. .
;~ 0.77 Kg/e whloh was obta~lned by~the oonventional method -of packing the stee} fibers lnto~the container at random, the metho~d of the~present invention could pack the steel ~ibers into the container about 2.6 times more olosely~. ~Moreover, the carbon content of the steel ibers used was less than 0.1 ~o and there was practically no residual magnetism. ~.
,:
:, . :, ~ , , - . .
. . :~
.
, .
:: .
.~:
- : . : . ~:
,, -- 10 --., ` ~.
r
entire ~olume and deterloratlng the appearance as a commodity. -~
~ - ;, .
~ ~ 2 :
3~
SU~IMARY OF 'I'~IF. INVENT[ON
It i9 the object of the present inven~ion to provide a packaging method whereby in packing needlelike magnetic metal pieces such as steel fibers, the needlelike metal pieces are packed into a container in such a manner that the needlelike metal pieces are substantially arranged in the same direction thus improving the packing ratio and moreover there is no possibility of the needlelike metal pieces being fastened to-gether tightly thus reducing the apparent volume and there is practically no need to resort to any dispensing operation at ` the time of use.
:-, . , The present invention i5 defined as a method of -~
packaging needlelike magnetic metal pieces by feeding said ;
:; :
pieces into a container made of non-magnetic material to produce a substantially parallel magnetic flux in said container ~ characterized in that said needlelike magnetic metal pieces -¦ being steel fibers for use with steel fiber reinforced concrete which contains less than 0.1% carbon and said magnetic flux being produced intermittently and at least thrice during the ;~
time in which said steel fibers are fed into said container by -~, switching off and on a current flowing in an electromagnet having a pair of opposed magnetic poles, each of said poles having a pole face substantially equal to the area of an opposite side of said container.
BRIEF DESCRIPTION OF THE DRAWING -Figure l(a) is a schematic diagram oseful for explaining ;ll a preferred embodiment of the present invention.
Figure l(b) is a schematic diagram showing the ~ -orientation of the steel fibers in a container when the ~- 30 magnetic flux is extinguished in the embodiment of Figure l~a). -~
Figure l(c) is a schematic diagram showing the ~ orientation of the steel fibe-rs in the container after the ,- :
~ , :
~. jl/ .. ` -3- ~ ~
- ~05;~9~
-~ completion of th~ packLng oE the steel fiber~ into ~he contalner in the embodiment of ~igure l(a).
Figure 2 is a schematic dlagram showing a modified form of the embodiment of Fig~re l~a).
Figure 3 is a schematic diagram showing another preferred embodiment of the present invention.
DETAIIED DESCRIPTION OF THE INVE~TION
The method of this invention will now be described with reference to the drawings. In the following des-` 1 0 , ",, ~., ,::
., :
~:
,J . ~ .
~; ~
~, :: ,'~..
.. .
:i . .~;
' ~:
.~ , 1 `,` `: `~:
.~
. ~~: :::
; jl/ _4~
~ ~
~jj3~6 ~ ~
crlption of the embodiments of the present invention,the needlelike magnetic metal pieces consist of steel fibers. As shown in the drawings, steel fibers 1 ar~
fed into a container 2 through a feed pipe 4 ~he container 2 is made of a non-magnetic material such as paper, wood or plaætic material. In the method of this invention, magnetic flux which is substantially parallel horizontally is produced in the container 2. ~ ~
In the e~bodiments shown in Figs. 1 and 2 the magnetic ~ --flux is produced during the time that the steel flbers are being packed into the container, while in the embodi-ment shown in Fig. ~ the maenebic ~lux is praduced a~ter the steel fibers have been packed inbo the contalner.
In the embodiment æhown in~Fig, 1, the magnetlc poles N and S of a bipolar electromagnet 3, each~having a pole~face substantially equal bo the area of each side of the eontalner 2,~are externally opposed to each other on the opposed sides o~ the container 2. The steel fibers 1 are fed from above into the container 2 through , the feed plpe 4. ` `
Firstly, wit4 a current interrupter 5 for the bipolar ; --~
electromagnet 3 turned on, when the steel fibers 1 are ` ; `
fed lnto the contalner 2 through the feed pipe 4, the steel ~`
fibers 1 are aligned and orientated in the electrode direc-tion by vlrtue of;the magnetlc flux~which~has been produced ;~
substantially parallely in t~e horizontal direction in the container 2. At this tlme~, though the steel fibers ln the container 2 are orientated in the æame direction ,: :, , as shown in ~ig. l(a), the steel fibers are not arranged ~ 5 ~
, . . .. . ... . . .
105;~ 6 ~ ~
closely as yet as shown in the Figure l(a). Though it is possible to closely pack the steel fibers together by pressing down and compressing the steel fibers, this process is not desirable since it tends to make the packaging apparatus more complicate. On the other hand, the downward movement o~ the steel fibers contacting with the inner side o~ the container 2 are impeded by the ;~
~rictional force and the steel fibers as a whole are shaped into a form having a central depression as shown in Fig. l(a). This tendency ténds to become more marked ; ~ .
with increase in the amount of steel fibers fed.
According to the present embodiment, the current interruptor 5 for interrupting the flow of ourrent in the electromagnet 3 is turned off at suitable intervals to extinguish the magnetic field in the container~2.
At this time, the feeding of the steel ~ibers is also temporarily stopped. ~When the current is~swltched off, '~
the steel~fibers 1 in the container 2 ~all downward in the above-mentioned ~orm~and settle into a closely arranged form with a slight depression formed in the central portion as shown in Fig. l(b). It is necessary to switch of~ the current only for a very short period o~
time. ~hereafter, the current lnterrupter 5 is turned on again and the feeding of the steel fibers is resumed ~.
so that the newly fed steel fibers fill the previously formed depression and are~further arranged and orientated ~
thereon in the~like manner. ~ ~hls process is repeated ~`
to ~eed the stael flbers into the container 2 until the ;~
container 2 is filled wlth the steel fibers.
.
::
:
i3~6 The resulting condition is shown in Fig. l(c). During the time interval between the beginning and end of feed-ing of the steel Eibers~l, it is necessary to turn off and on the current flow at least twice. If the cùrrent flow is not turned off and on at all or the current flow is turned off and on only once, the resulting central depression will be so great that it is impossible to fill the container with the steel fibers which are arranged closely enough on the whole.
The second embodiment shqwn in Fig. 2 differs from the embodiment of Fig. 1 in that a pair of elect~o-magnets 3a and 3b are used in place of the bipolar electro~
magnet 3. A current flow is caused bhrough the electro-magnets 3a ànd 3b and the magnetic flux which is substan-~- tially parallel horizontally is produced in the container ., .
2 from the north pole of the electromagnet 3a to the south pole of the electromaynet 3b. In this way, the distance/`-between these magnetic poles (N and S) can be easily varied in accordance with the-size of the container 2. The con-~ :
tainer 2 is placed on a weighing machine 6.
, The third embodiment shown in Fig. 3 differs from the embodiment of Fig. 1 in that after the steel fibers 1 have been ~ed into the container 2 by way of the feed pipe 4, the container 2 is transferred into the core of a cylindrical ele~omagnet 3c and the steel fibers 1 are orientated and closely arranged by means of the -magnetic flux produced in the container 2 substantially parallely in the horizontal direction. In this case, `
` forced vibrations are simultaneously caused in the contai-'~ -~ ', ' ' `,~ ~", ' ~
ph/~
. ~
~I~S319~ !
ner 2 by a vibrator 7 -thus facilitating the orientation ~-and close arrangement of the steel fibers. After the orientation of the steel fibers has been completed, the container 2 is removed ~rom the core of the cylindrical electromagnet ~c and it is then wrapped for shipping.
- In this embodiment, o~ course it is possible to use abipolar electromagnet in place of the cylindrical electro-magnet in the similar manner as in the embodiment of Fig. 1.
D Another additional feature of the embodiment shown in ~ig. 3 is the fact that the steel fibers 1 : :1 ,~ fed into the container 2 are subjected -to a preliminary ! orientation by passing them through a magnetic field , wherein the magnetic flux is~passing in the direction of I ~
movement of the~steel flbers.~ In other words,~he feed i~ ~ plpe 4 whloh is made of a non-magnetlc materlal such as -~ ~ plastic~is extended through~a cylindrical~electromagnet ~, 3d, supported on a fulcrum 8 and rnechanically vibrated ;, by a hexagonal bar 9. Thus, when the steel fibers 1 are fed through the feed plpe 4, the steeI fibers 1 are passed -throu~h the magnetic field of the electromagnet 3d in which the magnetic flux passes in the~direction of movement o~ the steel fibers and the steel fiber~ are also subjected to mechanical vibrations, with the result that the steel fibers 1 thus preliminarily orientated fall , ~; as such into the~container ~ and in this way the orlen-tation of~the steel fibers 1 in the container 2 is ensured more positively.
- With the method of this invention performed by the ~: - 8 -,:,'' :
~105i319~ii arrangements described above, there is an advantage that needlelike magnetic metal pieces such as steel ~ibers can be arranged to assume the same direction and packed ~: :
closely in the container9 reducin~ the costs of paokaging and transpor~ation, eliminating the danger of the steel fibers being fastened together tightly and deteriorating the appearance, and eliminating the necessity of using a ;
large dispenser for unraveling the æteel fibers on the ~;
site to put then in use.
Anothor advantage is that when steel fibers of soft magnetic material containing less than 0.1 ~ o~
carbon are used, the steel fibers removed ~rom the magne-tic field has practically no residual magnetism.
The steel ~ibers packaged by the method o~ this ~
invention are useful for use as reinforcing fibers for ~ ~-concrete. However, the method of this invention cannot be used.with glass~fibers9 carbon fibers,~ monel fibers~
etc., which are slmilarly usable as concrete reinforcing fibers as the steel fibers. ;~
While the method of this invention has been des-cribed as ~ainly applied -to the packagil1g of steel fibers, of cour9e the method o~ this invention can be used with other needle}ike magnetlc metal pieces, such aS 9 needles, ~ ?
nails, etc. ~ ~
.. .
Description of the prefsrred~embodlment ~ ~
.:~ : ~ : ' , , :
The following exampIe shows the results obtained ~5, by performing the~ method of this invention with the - 9 ~
- . , arrangement shown in Fig. 1.
a) Required voltage and current 160V, 3 - 4 A
b) Magnetic field 600 ~ 800 gaus~
,~
c) Size of container 24 X 1~ X 30 om d) Volume o~ container about 10 ~
e) St~el fiber TESUSA (~radename of Nippon Kokan K. K.) ' Size 0.5 X 0O5 X 30 mm Composition C = 0.05 %, Mn = 0.~ %, ~-P - 0~014 %J S = 0.013 %
~,~ f) Packed weight 20 Kg ~,~ g) Weight per unit volume 2 Kg/ e As compared with the weight per unit volume of : ~. .
;~ 0.77 Kg/e whloh was obta~lned by~the oonventional method -of packing the stee} fibers lnto~the container at random, the metho~d of the~present invention could pack the steel ~ibers into the container about 2.6 times more olosely~. ~Moreover, the carbon content of the steel ibers used was less than 0.1 ~o and there was practically no residual magnetism. ~.
,:
:, . :, ~ , , - . .
. . :~
.
, .
:: .
.~:
- : . : . ~:
,, -- 10 --., ` ~.
r
Claims
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A method of packaging needlelike magnetic metal pieces by feeding said pieces into a container made of non-magnetic material to produce a substantially parallel magnetic flux in said container characterized in that said needlelike magnetic metal pieces being steel fibers for use with steel fiber reinforced concrete which contains less than 0.1% carbon and said magnetic flux being produced intermittently and at least thrice during the time in which said steel fibers are fed into said container by switching off and on a current flowing in an electromagnet having a pair of opposed magnetic poles, each of said poles having a pole face substantially equal to the area of an opposite side of said container.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10937276A JPS5336394A (en) | 1976-09-14 | 1976-09-14 | Method of packing needle shaped magnetic metal material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1053196A true CA1053196A (en) | 1979-04-24 |
Family
ID=14508555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA264,438A Expired CA1053196A (en) | 1976-09-14 | 1976-10-29 | Method of packaging needlelike magnetic metal pieces |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5336394A (en) |
| CA (1) | CA1053196A (en) |
| DE (1) | DE2651315A1 (en) |
| GB (1) | GB1514390A (en) |
| NZ (1) | NZ182419A (en) |
| SE (1) | SE7612390L (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS555321A (en) * | 1978-06-16 | 1980-01-16 | Sumitomo Metal Ind | Method of storing magnetic spicular substance |
| US4388792A (en) * | 1980-07-31 | 1983-06-21 | Electro-Matic Products Co. | Apparatus for packaging magnetic articles |
| AU7125296A (en) * | 1995-09-26 | 1997-04-17 | Bilwinco A/S | A packaging machine and a method for packaging units in portions |
| CN108454987B (en) * | 2018-03-21 | 2023-05-02 | 江西尚朋电子科技有限公司 | Soft magnetic processing and packaging system |
| CN109551611A (en) * | 2018-12-04 | 2019-04-02 | 佛山科学技术学院 | A kind of equipment preparing unidirectional distributive steel fiber beams of concrete |
-
1976
- 1976-09-14 JP JP10937276A patent/JPS5336394A/en active Granted
- 1976-10-26 NZ NZ182419A patent/NZ182419A/en unknown
- 1976-10-29 CA CA264,438A patent/CA1053196A/en not_active Expired
- 1976-11-02 GB GB45427/76A patent/GB1514390A/en not_active Expired
- 1976-11-05 SE SE7612390A patent/SE7612390L/en unknown
- 1976-11-10 DE DE19762651315 patent/DE2651315A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE2651315A1 (en) | 1978-03-23 |
| GB1514390A (en) | 1978-06-14 |
| JPS5336394A (en) | 1978-04-04 |
| NZ182419A (en) | 1979-11-01 |
| JPS5548001B2 (en) | 1980-12-03 |
| SE7612390L (en) | 1978-03-15 |
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