Abstract:
The present invention relates to a lubricating composition for forging in the form of a powder or a compacted powder including: one or more dicarboxylic acid(s) chosen among adipic acid, phthalic acid, isophthalic acid, terephthalic acid, sebacic acid, succinic acid and suberic acid; and one or more base(s) chosen among sodium carbonate, sodium bicarbonate, potassium carbonate and potassium bicarbonate, the dicarboxylic acid(s)/base(s) molar ratio ranging between 0.8 and 1.2.
Abstract:
The present invention relates to a lubricating composition for forging in the form of a powder or a compacted powder including: one or more dicarboxylic acid(s) chosen among adipic acid, phthalic acid, isophthalic acid, terephthalic acid, sebacic acid, succinic acid and suberic acid; and one or more base(s) chosen among sodium carbonate, sodium bicarbonate, potassium carbonate and potassium bicarbonate, the dicarboxylic acid(s)/base(s) molar ratio ranging between 0.8 and 1.2.
Abstract:
The invention concerns the field of tunnel boring machines and the operation of similar equipment. A composition of foamed clay is injected into the head (2) of the machine and mixed with the soil to be processed then removed along with the cuttings. Wear of metal parts, particularly wear caused by hard rock, may be greatly reduced and removal is facilitated.
Abstract:
La présente invention a pour objet une composition lubrifiante pour la forge sous forme de poudre ou de poudre compactée comprenant; un ou plusieurs acide(s) dicarboxylique(s) choisi(s) parmi l'acide adipique, l'acide phtalique, l'acide isophtalique, l'acide téréphtalique, l'acide sébacique, l'acide succinique et l'acide subérique; et une ou plusieurs base(s) choisie(s) parmi le carbonate de sodium, le bicarbonate de sodium, le carbonate de potassium et le bicarbonate de potassium, le rapport molaire acide(s) dicarboxylique(s)/base(s) étant compris entre 0,8 et 1,2.
Abstract:
La présente invention concerne et utilise, afin d'empêcher que le pétrole brut "fige" dans une "ligne" de transport, un gel d'isolation thermique à réticulation contrôlée c'est-à-dire relativement fluide au départ et ne développant la gélification in-situ dans les canalisations que sous certaines conditions, de température entre autres. On peut, afin d'obtenir la réticulation contrôlée, procéder à des 1) Réticulations physiques c'est-à-dire établir des liaisons physiques entre polymères - liaisons complètement révesibles opar effet thermique et/ou de cisaillement mécanique - et 2) Réticulations chimiques: Monomères ou polymères ayant des fonctions permettant de réaliser des liaisons chimiques entre polymères.
Abstract:
The invention concerns the field of tunnel boring machines and the operation of similar equipment. A composition of foamed clay is injected into the head (2) of the machine and mixed with the soil to be processed then removed along with the cuttings. Wear of metal parts, particularly wear caused by hard rock, may be greatly reduced and removal is facilitated.
Abstract:
The invention concerns the field of tunnel boring machines and the operation of similar equipment. A composition of foamed clay is injected into the head (2) of the machine and mixed with the soil to be processed then removed along with the cuttings. Wear of metal parts, particularly wear caused by hard rock, may be greatly reduced and removal is facilitated.
Abstract:
The invention relates to a forging lubricant composition in the form of powder or compacted powder comprising: one or more dicarboxylic acid(s) chosen from adipic acid, phthalic acid, isophthalic acid, terephthalic acid, sebacic acid, succinic acid and suberic acid; and one or more base(s) chosen from sodium carbonate, sodium bicarbonate, potassium carbonate and potassium bicarbonate, the dicarboxylic acid(s)/base(s) molar ratio being between 0.8 and 1.2.
Abstract:
The invention relates to a device for restoring and for installing the thermal insulation capacity of the external jacketing of jacketed elements such as tubular pipes, connection elements and other jacketed elements, which are positioned on the seabed, which device comprises an envelope having fastening and/or clamping means, which is able to be mounted on said jacketed elements, which is characterized in that the device includes, inside its envelope, an elastomeric thermal insulation component of the gel type, having the shape of a solid or apertured lining/blanket secured to said envelope and compressed by being clamped onto the jacketed element during its installation.
Abstract:
The invention concerns and employs, so as to prevent crude oil from becoming congealed in a transmission line, a thermal insulation gel with controlled crosslinking, that is initially relatively fluid and turning into gel in situ in the pipes only in certain conditions, of temperature among others. Controlled crosslinking can be obtained by carrying out: 1) physical crosslinking processes that is by generating physical links between polymers, links that are perfectly reversible by thermal effect and/or mechanical shearing; and 2) chemical crosslinking processes involving monomers or polymers having functions for producing chemical bonds between polymers.