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Closed circulation water cooler and manufacturing process thereof

A water cooler and closed circulation technology, applied in the field of closed circulation water cooler and its manufacturing process, can solve the problems of inability to completely remove scale, toxic cleaning waste liquid, secondary corrosion or corrosion under scale, etc. Effects of structural defects, improved homogenization, and improved machinability

Inactive Publication Date: 2015-10-07
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

[0028] The present embodiment provides a kind of closed circulation water cooler, and the composition and mass percentage of its iron and steel raw materials are:

[0029] C: 0.102%, B: 0.053%, N: 0.001%, Mn: 0.34%, Si: 0.087%, P: 0.002%, S: 0.001%, Nb: 0.065%, Cr: 2.23%, Mo: 0.075%, W: 0.041%, V: 0.012%, Ti: 0.504%, Al: 1.32%, Cu: 0.41%, compound rare earth: 0.423%, the balance is Fe and unavoidable impurities;

[0030] The composition and mass percentage of the composite rare earth are: lanthanum: 12%, cerium: 5%, praseodymium: 9%, neodymium: 22%, and the rest is europium.

[0031] The present embodiment also provides a manufacturing process of a closed circulating water cooler, the specific operations are as follows:

[0032] (1) Steel raw materials are smelted, refined and poured in steel plants to make cooler billets;

[0033] (2) Cool the cooler blank in step (1) using a combination of oil cooling-water cooling-air cooling. First, oil cooling is used to cool down to 81...

Embodiment 2

[0037] The present embodiment provides a kind of closed circulation water cooler, and the composition and mass percentage of its iron and steel raw materials are:

[0038]C: 0.104%, B: 0.055%, N: 0.003%, Mn: 0.36%, Si: 0.089%, P: 0.004%, S: 0.002%, Nb: 0.067%, Cr: 2.25%, Mo: 0.079%, W: 0.045%, V: 0.014%, Ti: 0.508%, Al: 1.34%, Cu: 0.43%, compound rare earth: 0.425%, the balance is Fe and unavoidable impurities;

[0039] The composition and mass percentage of the composite rare earth are: lanthanum: 14%, cerium: 7%, praseodymium: 13%, neodymium: 28%, and the rest is europium.

[0040] The present embodiment also provides a manufacturing process of a closed circulating water cooler, the specific operations are as follows:

[0041] (1) Steel raw materials are smelted, refined and poured in steel plants to make cooler billets;

[0042] (2) Cool the cooler blank in step (1) using a combination of oil cooling-water cooling-air cooling. First, oil cooling is used to cool down to 82...

Embodiment 3

[0046] The present embodiment provides a kind of closed circulation water cooler, and the composition and mass percentage of its iron and steel raw materials are:

[0047] C: 0.103%, B: 0.054%, N: 0.002%, Mn: 0.35%, Si: 0.088%, P: 0.002%, S: 0.001%, Nb: 0.066%, Cr: 2.24%, Mo: 0.077%, W: 0.043%, V: 0.013%, Ti: 0.506%, Al: 1.33%, Cu: 0.42%, compound rare earth: 0.424%, the balance is Fe and unavoidable impurities;

[0048] The composition and mass percentage of the composite rare earth are: lanthanum: 13%, cerium: 6%, praseodymium: 11%, neodymium: 25%, and the rest is europium.

[0049] The present embodiment also provides a manufacturing process of a closed circulating water cooler, the specific operations are as follows:

[0050] (1) Steel raw materials are smelted, refined and poured in steel plants to make cooler billets;

[0051] (2) Cool the cooler blank in step (1) by using a combination of oil cooling-water cooling-air cooling, first use oil cooling, cool down to 820°C...

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PUM

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Abstract

The present invention discloses a closed circulation water cooler, wherein the raw materials comprise, by mass, 0.102-0.104% of C, 0.053-0.055% of B, 0.001-0.003% of N, 0.34-0.36% of Mn, 0.087-0.089% of Si, 0.065-0.067% of Nb, 2.23-2.25% of Cr, 0.075-0.079% of Mo, 0.041-0.045% of W, 0.012-0.014% of V, 0.504-0.508% of Ti, 1.32-1.34% of Al, 0.41-0.43% of Cu, 0.423-0.425% of composite rare earth, and the balance of Fe and unavoidable impurities. The product of the present invention has characteristics of high temperature resistance, low temperature resistance, corrosion resistance under acid and alkali environments, rust resistance, aging resistance, and long service life.

Description

technical field [0001] The invention belongs to the technical field of cooling equipment, in particular to a closed circulating water cooler 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 in the cooling water can also cause metal corrosion and form ...

Claims

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Application Information

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IPC IPC(8): C22C38/32B22D30/00C21D6/00
Inventor 朱冬宏钱纪明
Owner KINGSHORE NEW RESOURCES ELECTRIC JIANGSU
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