SU1027192A1 - Grease for launching ships from slips - Google Patents

Abstract

PLASTIC LUBRICANE FOR DRAINING VESSELS WITH STEPS, containing petrolatum, ceresin, paraffin and rosin, characterized in that, in order to increase the adhesion to the wood and the strength of the lubricating layer, the lubricant additionally contains oxidized polyethylene wax or brown coal wax with the following -he-to-500 mixture. %: Pathway tum -5-43 Ceresin 10-4О Paraffin10-74 Rosin1-1О Oxidized polyethylene wax or brown coal wax1-10 (L with

Description

1102 The invention relates to antifriction. One-time grease lubricants intended for the launching of ships from inclined slipways, which are operable in the temperature range of the surrounding medium from –1 ° to + 35 ° C. In the final construction site, the vessel i is transplanted with building tmop on a runner in contact with inclined walkways along which it mixes into the water under the influence of gravity. LL friction reduction per track on a layer of lubrication. Lubricant for launching ships must withstand high loads, have high adhesion to the tree and a single, low coefficient of friction both in rest and movement. They are known from tapel lubricants (so-called release nozzles), which are prepared directly at shipbuilding enterprises without a single technology and recipe chain. Mineral, combined and soap greases are used to lower ships. Mineral smaaki are made from refined petroleum products. Combined stack lubricants consist of petroleum products with the addition of technical fats and products of the forestry industry. Soap greases contain fatty acid soaps, such as wood soap, as well as paraffin, calcium tarate and light oil. When using these lubricants, they are applied to the track in several layers. The lower layer, which adheres to the tree, covers uneven stocks and causes a pressure. It must resist the squeezing of grease from under the runners. The transition layer also has increased hardness and provides communication with the upper layer. The top layer is a slip layer, which is the most mobile and provides the proper value of the friction coefficient. 11 The disadvantages of the used slip greases are their multi-layer, the fragility of the layers and the low adhesion to the wood. Also known is grease 2 for launching ships from stocks with the following component content, wt%: Paraffin 50-65 Vaseline 35-50 However, this lubricant cannot ensure reliable launch of large-capacity ships into the water, since it also has insufficient strength and low adhesion to wood . 2 The closest in composition to the pre-, laggable is a grease G3 | for launching ships from slipways, having the following composition, wt.%: Paraffin25-85 Ceresin5-25 Petropatum5-25 Rosin5-25 However, the known lubricant has insufficient strength and adhesion to the tree and does not provide reliable launching of ships in different climatic conditions because it softens at high ambient temperatures (melting point of lubricant is 56 ° C). The aim of the invention is the creation of a lubricant, a high strength and adhesion to the tree, and at the same time providing a low coefficient of friction. This goal is achieved by the fact that the grease for launching ships from the stocks, containing patrolatum, ceresin, paraffin and rosin, additionally contains oxidized polyethylene wax or brown coal wax, the content of these components being in the following ratio of components, wt.%; Petrolatum 5-43 Ceresin 10-40 Paraffin 10-74 Rosin1-10 Oxidized polyethylene wax or lignite wax1-10 For preparing lubricant, it is recommended to use crude ceresin, T-brand solid wax, PS brand petrolatum, and oxidized polyethylene wax — an oxidation product of polyethylene wax. PVO-ZO, krory is the waste production of polyethylene. The proposed lubricant is prepared according to known technology for hydrocarbon. lubricants. For the test & prepared the following formulations of the proposed and well-known lubricants, the composition of which is given in table 1 .. The test results for lubricants 1-10 are given in table 2. The results of determining the coefficient of static friction are given in Table. 3. As can be seen from the table. 3, the test samples of antifriction lubricants 1 and 6 according to the main indicators 3 102 meet the requirements of the technical specifications. Thus, the lubricant is prednagaema. exceeds the known in terms of strength and adhesion to wood. In addition, it has a high dropping point, which causes it to be used as a lubricant for starting a. . . . 719.2 4 on the water vessels of all types and purposes in the spring-summer BpeMsi. Thanks to TtMviy that the proposed lubricant has LORA operational properties, and 5 also provides a reduction in the coefficient of friction, it will find wide application in the launch of large-tonnage vessels. . . . ., T a b l and a a 1

23 43 Petrolatum30 Ceresin oil 24 10 30 4010 74 40 1070 Paraffin 40 1 2 61 Rosin3 Oxidized polyethylene 1051 wax3 Brown coal wax Droplet temperature. 79 76 77 75 78.5 Depth of needle penetration, mm / 1014 13 13 19 7.5 Tensile strength at hedgehog-. tie, kgf / cm 22.5 38 22.5 18 24 Strength of bones at times. kgf / cm2 2.1 1.85.1.6 2.0 1.5 ditch, Coefficient 0.18 0.14 0.16 0.19 0.19 friction -10

table 2

62 28 12

1.2 Of29 38 20 20 0 25 4 O 2 O 4 O 4 50 - 10 33 74 78 78 65 21 25 12 27.5 17.5 14 12 1.8 1.4 1.5 1.2 0.1 0.1 O, 17 0.16, 08

- Oh, O36

0.087

0.028 Oh, 024

Table

O.OZZ O, 03

0.023 O.OZb 0.045

0.025 O, O28

O, O 23 0.036 O, 036

Claims (1)

PLASTIC GREASING FOR DRAINING VESSELS FROM SLIDES, containing petrolatum, ceresin, paraffin and rosin, characterized in that, in order to increase adhesion to wood and the strength of the lubricating layer, the lubricant additionally contains oxidized polyethylene wax or brown wax in the following ratio, wt. %: Petrolatum * Ceresin Paraffin Rosin Oxidized polyethylene wax or brown wax 5-43 '10 -40 10-74 1-10 1-10>