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Tube shell type slide oil fresh water cooler for ship and manufacturing technology of tube shell type slide oil fresh water cooler

A manufacturing process, shell-and-tube technology, applied in the marine shell-and-tube lubricating oil fresh water cooler and its manufacturing process, cooler field, can solve secondary corrosion or under-deposit corrosion, scale cannot be completely removed, and cleaning waste liquid is toxic And other problems, to achieve long service life, improve high temperature non-skinning performance, not easy to rust and aging effect

Inactive Publication Date: 2015-09-30
KINGSHORE NEW RESOURCES ELECTRIC JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For a long time, traditional cleaning methods such as mechanical methods (scraping, brushing), high-pressure water, chemical cleaning (pickling), etc. have caused many problems when cleaning equipment: scale and other deposits cannot be completely removed, and acid liquid causes corrosion to the equipment to form loopholes , the residual acid will cause secondary corrosion or under-scaling corrosion on the material, which will eventually lead to the replacement of equipment. In addition, the cleaning waste liquid is toxic and requires a lot of money for wastewater treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A marine shell-and-tube lubricating oil fresh water cooler provided in this embodiment has the following raw material components and mass percentages: C: 0.18%, Mn: 0.84%, Si: 0.13%, P: 0.002%, S: 0.001%, Nb: 0.09%, W: 0.02%, Ti: 0.21%, Al: 0.45%, Cu: 0.96%, Cr: 0.75%, Mo: 0.06%, rare earth elements: 0.71%, the balance is Fe and unavoidable impurities ;

[0033] The composition and mass percentage of the rare earth elements are: Ce: 15%, Pr: 16%, Nd: 25%, Er: 9%, and the rest is La.

[0034] The present invention also provides a manufacturing process of a marine shell-and-tube lubricating oil fresh water cooler, comprising the following steps:

[0035] (1) Hot metal pretreatment:

[0036] Use Mg powder or Mg powder + CaO to reduce the sulfur content in the molten iron to below 0.0015%, and the temperature after pretreatment of the molten iron: 1020°C;

[0037] (2) Top-bottom compound blowing converter smelting;

[0038] End-point component control requirements: P≤0....

Embodiment 2

[0048] A marine shell-and-tube lubricating oil fresh water cooler provided in this embodiment has the following raw material components and mass percentages: C: 0.20%, Mn: 0.88%, Si: 0.17%, P: 0.003%, S: 0.0015%, Nb: 0.11%, W: 0.04%, Ti: 0.23%, Al: 0.65%, Cu: 0.98%, Cr: 0.79%, Mo: 0.08%, rare earth elements: 0.73%, the balance is Fe and unavoidable impurities ;

[0049] The composition and mass percentage of the rare earth elements are: Ce: 13%, Pr: 8%, Nd: 21%, Er: 5%, and the rest is La.

[0050] The present invention also provides a manufacturing process of a marine shell-and-tube lubricating oil fresh water cooler, comprising the following steps:

[0051] (1) Hot metal pretreatment:

[0052] Use Mg powder or Mg powder + CaO to reduce the sulfur content in the molten iron to below 0.0015%, and the temperature of the molten iron after pretreatment: 1040°C;

[0053] (2) Top-bottom compound blowing converter smelting;

[0054] End point component control requirements: P≤0....

Embodiment 3

[0064] A marine shell-and-tube lubricating oil fresh water cooler provided in this embodiment has the following raw material components and mass percentages: C: 0.19%, Mn: 0.86%, Si: 0.15%, P: 0.002%, S: 0.001%, Nb: 0.10%, W: 0.03%, Ti: 0.22%, Al: 0.55%, Cu: 0.97%, Cr: 0.77%, Mo: 0.07%, rare earth elements: 0.72%, the balance is Fe and unavoidable impurities ;

[0065] The composition and mass percentage of the rare earth elements are: Ce: 14%, Pr: 12%, Nd: 23%, Er: 7%, and the rest is La.

[0066] The present invention also provides a manufacturing process of a marine shell-and-tube lubricating oil fresh water cooler, comprising the following steps:

[0067] (1) Hot metal pretreatment:

[0068] Use Mg powder or Mg powder + CaO to reduce the sulfur content in the molten iron to below 0.0015%, and the temperature of the molten iron after pretreatment: 1040°C;

[0069] (2) Top-bottom compound blowing converter smelting;

[0070] End-point component control requirements: P≤0....

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Abstract

The invention discloses a tube shell type slide oil fresh water cooler for a ship. The tube shell type slide oil fresh water cooler comprises, by mass percentage, 0.18% to 0.20% of C, 0.84% to 0.88% of Mn, 0.13% to 0.17% of Si, 0.002% to 0.003% of P, 0.001% to 0.0015% of S, 0.09% to 0.11% of Nb, 0.02% to 0.04% of W, 0.21% to 0.23% of Ti, 0.45% to 0.65% of Al, 0.96% to 0.98% of Cu, 0.75% to 0.79% of Cr, 0.06% to 0.08% of Mo, 0.71% to 0.73% of rare earth elements, and the balanced Fe and inevitable impurities. The invention further discloses the tube shell type slide oil fresh water cooler for the ship and a manufacturing method of the tube shell type slide oil fresh water cooler. The tube shell type slide oil fresh water cooler is resistant to high temperature and acid and alkali corrosion, not prone to rusting and aging, and long in service life.

Description

technical field [0001] The invention belongs to the technical field of metal material processing, and relates to a cooler, in particular to a shell-and-tube lubricating oil fresh water cooler for ships and a manufacturing process thereof. Background technique [0002] The cooler body is composed of cooler tubes, fixed orifice plates, movable orifice plates, baffles, etc. Both ends of the cooler tube are connected to the fixed and movable orifice plates; the fixed orifice plate is connected to the flange of the outer body, and the movable orifice plate can be freely expanded and contracted in the outer body to eliminate the influence of temperature on the cooler tube due to thermal expansion and contraction. The baffles act to enhance heat transfer and support the cooler tubes. [0003] Because most of the cooling water contains calcium, magnesium ions and acid carbonate. Carbonates are formed when cooling water flows over metal surfaces. In addition, the oxygen dissolved ...

Claims

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Application Information

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IPC IPC(8): C22C38/28
Inventor 朱冬宏钱纪明
Owner KINGSHORE NEW RESOURCES ELECTRIC JIANGSU
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