CN1080605C

CN1080605C - Method and appts. for producing helically-wound lock-seam tubing with reduced lubrication

Info

Publication number: CN1080605C
Application number: CN96195155A
Authority: CN
Inventors: 康尼·彼得松; 唐纳德·尼古拉松
Original assignee: Lindab AB
Current assignee: Lindab AB
Priority date: 1995-01-20
Filing date: 1996-06-17
Publication date: 2002-03-13
Anticipated expiration: 2016-06-17
Also published as: CN1189790A

Abstract

The present invention relates to a sintered body of titanium-based carbonitride alloy comprising hard constituents containing at least tungsten in addition to titanium in a binder phase based on cobalt. There are four distinctly different microstructural components, namely: A) cores which are remnants of and have a metal composition determined by the raw material powder; B) tungsten-rich cores formed during the sintering; C) outer rims with intermediate tungsten content formed during the sintering; and D) a binder phase of a solid solution of at least titanium and tungsten in cobalt. Toughness and wear resistance are varied by adding WC, (Ti,W)C, and/or (Ti,W)(C,N) in varying amounts as raw materials.

Description

Method and apparatus with a small amount of lubricated production spiral seam pipe

Technical field

The invention relates to the production that spiral twines lock seam tube, particularly about with the less lubricated method and apparatus that carries out this production.

Background technology

The machine that known this production spiral twines the crimping pipe has, for example, the open GB-2 of BP, 213,748 with U.S. Pat 4,706,481 disclosed machines, these machines are known for this area professional already, so need not to be described in detail again, the modified version of these machines also can be buied on market, but these machines still have some shortcoming as described below.

In order to stand corrosion, the metal tape that is used to produce this product is the galvanized metal band normally.Galvanise metal strip will cause many problems well-known to those skilled in the art.

When metal tape forms the edge before the formation head on the roller group, the fractionlet of zinc will come off from metal tape, and be bonded on the crimping roller, these zinc fragments increase the crimping roller diameter, particularly last pair roller, because these rollers are not that elastic bearing is on axle, chucking power between the two roller roll gaps will enlarge markedly, and the result just makes zinc be deposited on the roller, under serious situation, these do not wish the power that exists even big to roller is destroyed, and cause producing pause.

Another problem is owing to metal tape between guide plate slides the zinc fragment to be come off before forming head, and this will form the accumulation of zinc between the opposite face of these guide plates.If zinc is piled up too much on guide plate, will disturb infeeding of metal tape between two guide plates.

Other shortcoming is, because huge frictional force that is produced among forming head and heat, can make on the metal tape zinc coat deliquescing and is bonded in the forming head, and this just makes the shaping difficulty more of in forming head pipe.

So far, relevant zinc metal sheet come off the solution of problem be by different parts in machine to the metal tape supply of lubricant, normally You way solves.At US 2,136, to have discussed in 943 this lubricatedly, U.S. Pat 3,750 has also been discussed the metal tape lubrication problem in 439 and the open NO.835 of russian patent, 558.

In most of machines of being buied on current market, oil is to be fed on the metal tape in an extremely simple manner.Traditionally, the edge shaping combination is always immersed in the oil groove, and oil is dispersed throughout on the whole width of metal tape.Yet this arrangement has many shortcomings, will be discussed below.

When roller is immersed in when rotating in the oil groove, oil will be coated on the metal tape upper surface, and this face is exactly the inner surface of pipe afterwards.Like this, just make the inside and outside two sides of production tube all be with oil, and this consequence is undesirable.

If this pipe is used for ventiduct system, will gather dust or other particle in the inside of pipe, and this can become bacterium, the breeding place of germ, mould etc., this will be harmful to health.And foul is piled up the internal cross section that can reduce pipe in the pipe, and the result just can not keep the intrinsic gas flow rate and the drafting efficiency of pipeline again.

Similarly, dust and other particle accumulate in tube exterior, handle them and also make us very thorny.And if they were not painted, tube exterior must be cleared up.

When transportation, in order to save the space, often in the middle of the bigger pipe of the less pipe insertion diameter of diameter, the oil of narrow tube outside will stick in the inboard of diameter than bassoon like this.

And a kind of particular disadvantages is, the excessive oil in the lock seam can cause pipe " spin " or slip in transportation and cargo handling process.Because the result of this spin can make pipe diameter increase, and then the infringement sealing property, and cause standarized component and the pipe can not be adaptive.

In recent years, for no whelk revolve twine seamed pipe require growing, very big for the interest of seeking that solves above-mentioned variety of issue scheme.

Summary of the invention

The objective of the invention is to overcome above-mentioned various shortcoming, it has proposed a kind of method and apparatus that uses minimum lubricant production spiral to twine lock seam tube.

Other purpose of the present invention provides the production of the helically-seamed pipe that a kind of people can handle easily.

A further object of the present invention provides easily and the adaptive method and apparatus of existing machine, and the pipe fitting of producing according to the present invention can be used for, for example, and ventiduct system.

The invention provides a kind of method of producing spiral winding lock seam tube by the metal tape with longitudinal edge portion, it comprises the steps: to supply with band to moulded head; In moulded head, make band be configured as helical form, thereby the limit portion of spiral forming band is engaged with each other; Seam is twined to form spiral on the formed pipe of moulded head in the limit portion that engages of boot band; And send this spiral from moulded head and twine seamed pipe; It is characterized in that: before moulded head, apply lubricant partly in that side of the band in the outside that forms pipe, lubricant only is coated on the limited position of bandwidth; Wherein, in a limit portion, provide lubricant to band near band.

The present invention also provides a kind of and has produced the equipment that spiral twines lock seam tube by the metal tape that longitudinal edge portion is arranged, and it comprises: device from band to moulded head that supply with; The device that in moulded head, makes band become helical form and the limit portion of this helical form band is engaged with each other; The limit portion that engages of boot band is to form the banding device of spiral seam on the pipe that forms in moulded head; And the device of sending this spiral seam pipe from moulded head, it is characterized in that: be configured in before the moulded head to the respective side of the pipe that forms the pipe outside device of supply of lubricant partly, lubricant only applies on the limited position of bandwidth, wherein feeding lubricating device comprises pipeline, and it has the supply aperture of close band edge portion.

The present invention has obtained excellent result with oily experiment as lubricant, compare with the common production technology in the background technology recited above, the oil of production tube outside reduces 25% at least, inside does not then almost have oil, owing to do not use oil groove, make being scattered still less of oil, just make machine environment on every side more comfortable operating personnel.

Brief description

Now, with reference to each accompanying drawing that most preferred embodiment of the present invention is shown the present invention is described in more detail.

Fig. 1 is the schematic diagram of expression present device;

Fig. 2 is the sectional view of metal tape before edge moulding combination;

Fig. 3 is similar to Fig. 2, but that illustrate is another embodiment of feeding lubricating device;

Fig. 4 represents the sectional view of metal tape after edge moulding combination.

Most preferred embodiment

As shown in fig. 1, driven roller 11 makes it to make up by the edge moulding that many rollers 13 are arranged, thereby forms the 16a of limit portion, 16b longitudinally for advancing metal tape 12 (arrow A).Under known state, metal tape 12 is shaped in moulded head 14 and spiral twines and produce pipe 15, moulded head 14 has lock ring roller 17-19, the same in order to form lock seam 25 with normal conditions at pipe 15 from moulded head 14 outputs (arrow B), also between driven roller 11 and moulded head 14, dispose a pair of guide plate 20.

To metal tape 12 supply of lubricant, for example You supply pipe 30 be placed in edge moulding combination 13 below, pipe 30 links to each other with oil feeder 31.Best, after driven roller 11, also arrange similar oil pipe 32 and oil feeder 33, this will be discussed below.

As seen, oil pipe 30 is positioned at limit portion 16a place in Fig. 2, and this limit portion becomes the shape (see figure 4) of Z in edge moulding combination 13, and oil pipe 30 has oil-feed port 34, it or be with 12 to contact or from having a small distance.

In the embodiment shown in fig. 3, the oil-feed port 34 of oil pipe 30 has bigger distance from metal tape 12, but is provided with brush part 35 in the end of oil pipe 30.Brush part 35 contacts with metal tape 12 all the time, and the motion of compensating band 12 any vertical direction aborning.

Fig. 4 illustrates Z-shaped limit 16a of portion and the L shaped limit 16b of portion, and they all are shaped in edge moulding combination.

Owing to be fuel feeding and only a fuel feeding in the outside of formation pipe 15 in metal tape 12 partly, almost there is not oil in the inboard one side of production tube 15.Clearly visible from Fig. 2 and 3, only on the utmost point limited portion of 12 width to its fuel feeding, do not spread to upside so do not have oil with 12.

Inboard in order to ensure guide plate 20 does not produce the accumulation of zinc fragment, and corresponding

fuel feeding assembly

32,33 preferably also is set after driven roller 11.Oil pipe 32 has opening 36, be positioned at following guide plate 20 with opening 36 corresponding positions.

In order further to reduce, scratch device 40-43, their actings in conjunction can be set be located at moulded head 14 before with afterwards with the oil mass on 12.In fact, strigil 40 comprises rubber lip limit (not shown), and the 16a of limit portion, the 16b of lip limit strip winding 12 sting tightly.The strigil 41 that is preferably on the moulded head 14 also has rubber lip limit (not shown), and makes the strigil 42 in the opening (not shown) that is configured in moulded head 14 that Oil sucking device (for example paper) be arranged.The strigil 43 that is configured in pipe 15 outsides can be any suitable form, preferably rubber lip element.

At last, what should emphasize is that the present invention never is confined to several embodiment described herein, has some modification and can infer under the situation that does not break away from notion of the present invention and appended claim scope.For example, this equipment can also be provided with other strigil and clearing apparatus deoils to remove.And the brush part also can be any other design.

Claims

1. produce the method that spiral twines lock seam tube (15) by the metal tape (12) with longitudinal edge portion (16a, 16b) for one kind, it comprises the steps: to supply with band (12) to moulded head (14); In moulded head (14), make band (12) be configured as helical form, thereby the limit portion (16a, 16b) of spiral forming band (12) is engaged with each other; The limit portion that engages (16a, 16b) of boot band (12) forms spiral winding seam (25) to go up at the formed pipe of moulded head (14) (15); And send this spiral from moulded head (14) and twine seamed pipe (15); It is characterized in that: at moulded head (14) before, apply lubricant partly in that side of the band (12) in the outside that forms pipe (15), lubricant only is coated on the limited position of band (12) width; Wherein, going up to being with (12) that lubricant is provided near a limit portion (16a) of band (12).

2. the method described in claim 1, wherein, the limit portion (16a, 16b) of band (12) is a formation limit portion in the preceding limit portion forming assembly (13) of moulded head (14), lubricant is painted on the band (12) before at forming assembly (13).

3. the method described in claim 2, wherein, it is Z-shaped along the first limit portion (16a) that is with (12) that the edge of the 1st limit portion (16a) of band (12) forms its part section, it is L shaped then being configured as its part section with the 2nd limit portion (16b) of (12), is locating near Z-shaped limit portion (16a) to band (12) supply of lubricant.

4. produce the equipment that spiral twines lock seam tube (15) by the metal tape (12) that longitudinal edge portion (16a, 16b) is arranged for one kind, it comprises: device (11) from band (12) to moulded head (14) that supply with; The device that in moulded head (14), makes band (12) become helical form and the limit portion (16a, 16b) of this helical form band is engaged with each other; The pipe (15) that forms in moulded head (14) is gone up the limit portion that engages (16a, 16b) of boot band (12) to form the banding device (17-19) of spiral seam (25); And the device of sending this spiral seam pipe (15) from moulded head (14), it is characterized in that: be configured in moulded head (14) before to the respective side of the pipe (12) that forms pipe (15) outside device of supply of lubricant (30,34) partly, lubricant only applies on the limited position of band (12) width, wherein feeding lubricating device (30,34) comprises pipeline (30), and it has the supply aperture (34) near band (12) limit portion (16a).

5. the equipment described in claim 4, wherein, the aperture (34) of lubricant supply pipe (30) applies to band (12).

6. the equipment described in claim 4, wherein, band (12) certain distance is left in the aperture (34) of lubricant supply pipe (30).

7. the equipment described in claim 6, wherein, lubricant supply pipe (30) has brush spare (35), and it is located at above-mentioned aperture (34) and goes up and remain with being with (12) and contact.

8. as each described equipment in the claim 4 to 7, wherein, also be included in the device (13) that moulded head (14) forms above-mentioned limit portion (16a, 16b) before, feeding lubricating device (30,34) is configured in before the limit portion building mortion.

9. the equipment described in claim 8, wherein, this limit portion building mortion (13) comprises that it is Z-shaped along the first limit portion (16a) that the marginal portion of the 1st limit portion (16a) that makes band (12) becomes part section, the 2nd limit portion (16b) with (12) then is configured as its part section along being with (12) to be L shaped device, and feeding lubricating device (30,34) is configured to go up supply of lubricant to the band of locating near Z-shaped limit portion (16a) (12).