NO157219B - Inhibitor against corrosion by CO2 and H2S in water-in-oil emulsions. - Google Patents

Inhibitor against corrosion by CO2 and H2S in water-in-oil emulsions. Download PDF

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Publication number
NO157219B
NO157219B NO820813A NO820813A NO157219B NO 157219 B NO157219 B NO 157219B NO 820813 A NO820813 A NO 820813A NO 820813 A NO820813 A NO 820813A NO 157219 B NO157219 B NO 157219B
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Norway
Prior art keywords
mold
lip
stop ring
casting
lip part
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NO820813A
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Norwegian (no)
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NO157219C (en
NO820813L (en
Inventor
Knut Oppenlaender
Karl Stork
Klaus Barthold
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Basf Ag
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Publication of NO820813L publication Critical patent/NO820813L/en
Publication of NO157219B publication Critical patent/NO157219B/en
Publication of NO157219C publication Critical patent/NO157219C/en

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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
    • C23F11/16—Sulfur-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/54—Compositions for in situ inhibition of corrosion in boreholes or wells
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M137/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
    • C10M137/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
    • C10M137/04—Phosphate esters
    • C10M137/08—Ammonium or amine salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M159/00—Lubricating compositions characterised by the additive being of unknown or incompletely defined constitution
    • C10M159/12—Reaction products
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M173/00—Lubricating compositions containing more than 10% water
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/02—Water
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/04—Elements
    • C10M2201/043—Sulfur; Selenenium; Tellurium
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/08—Amides
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/08—Amides
    • C10M2215/082—Amides containing hydroxyl groups; Alkoxylated derivatives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/22—Heterocyclic nitrogen compounds
    • C10M2215/223—Five-membered rings containing nitrogen and carbon only
    • C10M2215/224—Imidazoles
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/26—Amines
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/28—Amides; Imides
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/046—Polyamines, i.e. macromoleculars obtained by condensation of more than eleven amine monomers
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/06—Macromolecular compounds obtained by functionalisation op polymers with a nitrogen containing compound
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
    • C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
    • C10M2223/04—Phosphate esters
    • C10M2223/043—Ammonium or amine salts thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/01—Emulsions, colloids, or micelles

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Lubricants (AREA)

Description

Form for sentrifusalstøping av rør. Form for centrifugal casting of pipes.

Denne oppfinnelse vedrører fremstilling av rør ved sentrifugalstøpning. Mer spesielt angår oppfinnelsen de støpeformer som herunder nyttes samt midler for å hindre støpe-metallet fra å trenge ut ved endene av slike former. This invention relates to the production of pipes by centrifugal casting. More particularly, the invention relates to the casting molds used below as well as means to prevent the casting metal from seeping out at the ends of such molds.

Støpeformer for rør i forbindelse med sentrifugalstøpning utgjøres hovedsakelig av hule, avlange legemer som er anordnet slik at de kan rotere. Under støpingen blir smeltet metall tilført den ene ende av formen idet denne roterer, hvorved det smeltede metall slynges utover mot formen. Ved den påføl-gende størkning av metallet blir så det ferdig-støpte rør trukket ut av formen. Molds for pipes in connection with centrifugal casting mainly consist of hollow, elongated bodies which are arranged so that they can rotate. During casting, molten metal is fed to one end of the mold as it rotates, whereby the molten metal is flung outwards towards the mold. During the subsequent solidification of the metal, the cast pipe is pulled out of the mold.

Det er vanlig forekommende at det an-ordnes stopperinger ved begge ender av formen for å hindre at støpemassen trenger ut ved endene. Stopperingen ved den ene ende hvor røret trekkes ut, er demonterbar, mens ringen ved den ende som tilføres støpemassen normalt er fastmontert ved innpressing i formen, boltet fast eller fast-sveiset. It is common for stop rings to be arranged at both ends of the mold to prevent the molding compound from seeping out at the ends. The stop ring at one end where the pipe is pulled out is removable, while the ring at the end that is supplied with the molding compound is normally fixed by pressing into the mould, bolted or welded.

I forbindelse med de her beskrevne stopperinger er det høstet den erfaring at skader i støpeformen normalt oppstår ved at det dannes sår idet det støpte rør trekkes ut av denne, på grunn av tilstedeværelsen av støpegrader som er dannet ved endepartiet av røret. Støpegradene dannes ved at metall flyter inn i skjøten mellom enden av formen og den stoppering som befinner seg ved den ende gjennom hvilken det flytende metall til-føres. Tillike i de tilfeller hvor det anvendes stopperinger som er sveiset fast til formen og med sveiseskjøten på innsiden, har det vist seg at sveiseskjøten eventuelt vil brytes ned og derved forårsake at det flytende metall trenger inn i sprekker i sveisematerialet og således fører til støpegrader på endepartiet av det støpte rør. In connection with the stoppers described here, experience has been gained that damage to the mold normally occurs by the formation of a wound when the molded pipe is pulled out of it, due to the presence of molding burrs formed at the end of the pipe. The casting grades are formed by metal flowing into the joint between the end of the mold and the stop ring located at the end through which the liquid metal is supplied. Even in cases where stop rings are used that are welded to the mold and with the weld joint on the inside, it has been shown that the weld joint will possibly break down and thereby cause the liquid metal to penetrate into cracks in the welding material and thus lead to casting degrees on the end part of the cast pipe.

Ifølge foreliggende oppfinnelse er den her omtalte mangel rådet bot på ved at det er According to the present invention, the shortcoming mentioned here is remedied by the fact that it is

sørget for innretninger til å hindre at metallet tvinges ut av formen ved den ende av denne, hvor støpemassen tilføres. Det sær-egne ved disse innretninger i henhold til oppfinnelsen er at de omfatter et ringformet leppeparti ved innføringsenden av støpefor-men samt en stoppering festet i direkte anlegg mot leppepartiet, idet leppepartiet er ut-ført i ett med støpeformen og er bøyet innover, hvorved anleggsflaten mellom leppepartiet og stopperingen som er utsatt for provided for devices to prevent the metal from being forced out of the mold at the end of this, where the casting compound is supplied. The distinctive feature of these devices according to the invention is that they comprise an annular lip part at the insertion end of the mold as well as a stop ring fixed in direct contact with the lip part, the lip part being designed as one with the mold and is bent inwards, whereby the contact surface between the lip part and the stop ring which is exposed to

smeltet metall befinner seg innenfor den øvrige indre flate av støpeformen. Ved hjelp av disse innretninger vil enhver dannelse av støpegrader på røret ved at metall kunne trenge inn i overgangen eller anleggsflaten mellom ringen og leppedelen, ikke skade innsiden av støpeformen når røret trekkes ut. Oppståtte grader vil da være begrenset til innenfor den normale ytre diameter av røret og vil således ikke komme i berøring med formen. molten metal is located within the remaining inner surface of the mould. With the help of these devices, any formation of molding degrees on the pipe by metal penetrating the transition or contact surface between the ring and the lip part, will not damage the inside of the mold when the pipe is pulled out. Occurring burrs will then be limited to within the normal outer diameter of the pipe and will thus not come into contact with the mould.

Oppfinnelsen vil tre tydeligere frem i til-knytning til følgende beskrivelse av foretrak-kede utførelsesformer og til de medfølgende tegninger. Fig. 1 er et snitt gjennom endepartiet av en støpeform med innretninger ifølge en før-ste utførelsesform av oppfinnelsen for å hindre at støpemetall tvinges ut ved enden av formen. Fig. 2 er et lignende snitt som viser en annen utføreIsesform av oppfinnelsen. The invention will emerge more clearly in connection with the following description of preferred embodiments and the accompanying drawings. Fig. 1 is a section through the end part of a mold with devices according to a first embodiment of the invention to prevent casting metal from being forced out at the end of the mold. Fig. 2 is a similar section showing another embodiment of the invention.

I fig. 1 vises endepartiet 10 av en støpe-form gjennom hvilket endeparti det smeltede metall tilføres. I denne hensikt har den viste stoppering 12 et sentralt hull. Den ytre flate av formen er utført med en flens 14 som sam-virker med en ikke vist mekanisme for å bringe formen til rotasjon. Det skal også be-merkes at slike støpeformer muligens utføres av stålmateriale. In fig. 1 shows the end part 10 of a casting mold through which end part the molten metal is supplied. For this purpose, the stop ring 12 shown has a central hole. The outer surface of the mold is made with a flange 14 which cooperates with a mechanism not shown to bring the mold into rotation. It should also be noted that such molds are possibly made of steel material.

Ifølge oppfinnelsen er støpeformen for-synt med et leppeparti 16 som er bøyet innover slik at skjøten ved anleggsflaten, til hvilken skjøt støpemassen kan trenge inn i, befinner seg innenfor den øvrige indre flate 18 av støpeformen. Nevnte skjøt befinner seg ved henvisningstallet 20. Ved denne anordning vil enhver graddannelse som oppstår på rør-enden ved at støpemassen trenger inn mellom leppen 16 og stopperingen 12 ikke skade den indre flate 18 av støpeformen når røret trekkes ut av denne. According to the invention, the mold is provided with a lip part 16 which is bent inward so that the joint at the contact surface, into which joint the molding compound can penetrate, is located within the other inner surface 18 of the mold. Said joint is located at the reference number 20. With this device, any burr formation that occurs on the pipe end when the molding compound penetrates between the lip 16 and the stop ring 12 will not damage the inner surface 18 of the mold when the pipe is pulled out of it.

Det parti av støpeformen som danner leppen 16 fremkommer ifølge utførelsesfor-men i fig. 1 ved at det er uttatt materiale av støpeformen ved enden slik at det oppstår en ringformet fordypning som senere fylles med sveisemateriale 22. Etter at man har tatt ut materiale ved enden av støpeformen, blir så leppen 16 bøyet innover slik at formen på leppen blir den som er vist i fig. 1. Deretter blir stopperingen 12 sveiset fast til enden av støpeformen med anlegg mot leppen 16. Det sveisemateriale 22 som herunder anvendes, blir tilført i tilstrekkelig mengde til å fylle den utdreiede, ringformede fordypning i enden av støpeformen. The part of the mold which forms the lip 16 appears according to the embodiment in fig. 1 in that material has been removed from the mold at the end so that an annular depression is formed which is later filled with welding material 22. After material has been removed from the end of the mold, the lip 16 is then bent inwards so that the shape of the lip becomes which is shown in fig. 1. Next, the stop ring 12 is welded to the end of the mold against the lip 16. The welding material 22 used below is supplied in sufficient quantity to fill the turned out, annular depression at the end of the mold.

Idet det vises til fig. 2, viser denne en foretrukket utførelsesform som skiller seg fra den først beskrevne hovedsakelig ved anven-delsen av en noe forskjellig stoppering. For-skjellen består i at en del av stopperingen er kombinert med en del av sveisen som holder ringen for å danne en flens ved enden av støpeformen. Referring to fig. 2, this shows a preferred embodiment which differs from the first described mainly by the use of a somewhat different stop ring. The difference is that part of the stop ring is combined with part of the weld that holds the ring to form a flange at the end of the mould.

I utførelsesformen ifølge fig. 2 er også her leppen 16 dannet ved uttagning av materiale i veggen av støpeformen. I dette tilfelle er et parti av den ytre flate tatt ut av formen, hvilket parti strekker seg fra enden av formen og innover og bestemmer lengden av lep- In the embodiment according to fig. 2, the lip 16 is also here formed by removing material from the wall of the mould. In this case, a part of the outer surface is taken out of the mold, which part extends from the end of the mold inwards and determines the length of the lip-

pen 16. Under fastsveising av stopperingen 30 til enden av formen fyller sveisematerialet neat 16. During welding of the stop ring 30 to the end of the mold, the welding material fills

32 uttagningen. Ytterligere sveisemateriale 32 the withdrawal. Additional welding material

blir så tilført slik at en del av dette sammen med en del av stopperingen danner flensen 34. is then added so that part of this together with part of the stop ring forms the flange 34.

I de to viste utførelsesformer av oppfinnelsen er stopperingen 12 og 30 begge vist sveiset til endepartiet av støpeformen 10. Det vil dog kunne innses at hvis det ønskes å feste ringene ved hjelp av bolter eller presse dem fast, vil det fortsatt være anledning til å anvende et leppeparti av formen i kombina-sjon med slike ringer. Det er bruken av dette leppeparti utformet i ett med støpeformen som holder tilbake ethvert skjøte- eller sveise-material som resulterer i støpegrader og som igjen skader formen når røret trekkes ut fra denne. In the two shown embodiments of the invention, the stopper rings 12 and 30 are both shown welded to the end portion of the mold 10. However, it will be possible to realize that if it is desired to fasten the rings by means of bolts or press them firmly, there will still be an opportunity to use a lip part of the mold in combination with such rings. It is the use of this lip part formed in one with the mold which holds back any joint or welding material which results in casting degrees and which in turn damages the mold when the pipe is pulled from it.

Claims (3)

1. Støpeform for sentrifugalstøpning av rør bestående av en roterende hul støpeform samt innretninger for å hindre at det istøpte metall trenger ut ved den ende av støpefor-men hvor det smeltede metall føres inn, karakterisert ved at disse innretninger omfatter et ringformet leppeapparat (16) ved innføringsenden av støpeformen (10) samt en stoppering (12,30) festet i direkte anlegg mot leppepartiet (16), idet leppepartiet er utført i ett med støpeformen og er bøyet innover, hvorved anleggsflaten mellom leppepartiet og stopperingen som er utsatt for smeltet metall befinner seg innenfor den øvrige indre flate av støpeformen.1. Mold for centrifugal casting of pipes consisting of a rotating hollow mold as well as devices to prevent the cast-in metal from seeping out at the end of the mold where the molten metal is fed in, characterized in that these devices comprise an annular lip device (16) at the insertion end of the mold (10) as well as a stop ring (12,30) fixed in direct contact with the lip part (16), the lip part being made one with the mold and bent inwards, whereby the contact surface between the lip part and the stop ring which is exposed to molten metal is located within the other inner surface of the mould. 2. Støpeform som angitt i påstand 1 med et ytre flensparti ved sin ene ende, karakterisert ved at stopperingen (12,30) er sveiset fast til anlegg mot leppepartiet (16) og at sveisematerialet (22,32) fyller ut den ringformede fordypning som avgrenser leppepartiet (16), og derved forsterker støpefor-men i området for flenspartiet.2. Casting mold as specified in claim 1 with an outer flange part at one end, characterized in that the stopper ring (12,30) is welded firmly against the lip part (16) and that the welding material (22,32) fills the annular recess which delimits the lip part (16), thereby reinforcing the molding in the area of the flange part. 3 Støpeform som angitt i påstand 2, karakterisert ved at en del av sveisematerialet (32) sammen med en del av stopperingen (30) danner det ytre flensparti av støpeformen.3 Mold as stated in claim 2, characterized in that part of the welding material (32) together with part of the stop ring (30) form the outer flange part of the mold.
NO820813A 1981-03-14 1982-03-12 Inhibitor against corrosion by CO2 and H2S in water-in-oil emulsions. NO157219C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813109827 DE3109827A1 (en) 1981-03-14 1981-03-14 INHIBITORS AGAINST THE CORROSION OF CO (DOWN ARROW) 2 (DOWN ARROW) AND H (DOWN ARROW) 2 (DOWN ARROW) S IN WATER-IN-OIL EMULSIONS

Publications (3)

Publication Number Publication Date
NO820813L NO820813L (en) 1982-09-15
NO157219B true NO157219B (en) 1987-11-02
NO157219C NO157219C (en) 1988-02-10

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NO820813A NO157219C (en) 1981-03-14 1982-03-12 Inhibitor against corrosion by CO2 and H2S in water-in-oil emulsions.

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CA (1) CA1183838A (en)
DE (2) DE3109827A1 (en)
NO (1) NO157219C (en)

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DE3109827A1 (en) 1982-09-23
EP0060455A1 (en) 1982-09-22
EP0060455B1 (en) 1984-07-04
CA1183838A (en) 1985-03-12
NO157219C (en) 1988-02-10
NO820813L (en) 1982-09-15
DE3260316D1 (en) 1984-08-09

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