Ship lock mushroom head, mushroom head cap and processing method thereof

The technology of mushroom head cap and mushroom head is applied in the field of metal materials, which can solve the problem of wear and tear of mushroom head cap, and achieve the effects of improving wear resistance, significant economic and social benefits, and prolonging the period of major repairs.

Inactive Publication Date: 2008-07-09
JIANGSU PROVINGIAL TRANSPORTATION ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to select materials with reasonable hardness and good wear resistance as the material of the mushroom head and the mushroom head cap, adopt a reasonable treatment process for the surface, and adjust the material and hardness of the mushroom head and the mushroom head cap for matching use. Reasonable collocation of values ​​can solve the problem of serious wear of the mushroom head cap in the prior art, improve the wear resistance of the lock's moving parts, and prolong the service life of the ship's lock's moving parts

Method used

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  • Ship lock mushroom head, mushroom head cap and processing method thereof
  • Ship lock mushroom head, mushroom head cap and processing method thereof
  • Ship lock mushroom head, mushroom head cap and processing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1: The mushroom head adopts forged 40Cr ball surface quenching HRc45, and the mushroom head cap adopts 38CrMoAlA spherical nitriding HV900.

[0015] The chemical composition of the 40Cr material used is: C content 0.37-0.44%, Si content 0.17-0.37%, Mn content 0.50-0.80%; Cr content 0.80-1.10%.

[0016] The chemical composition of the 38CrMoAlA material used is: C content 0.35-0.42%, Si content 0.20-0.45%, Mn content 0.30-0.60%; Cr content 1.35-1.65%, Mo content 0.15-0.25%; Al content 0.70-1.10%.

[0017] Mushroom head adopts forging 40Cr process requirements: forging→stress relief annealing→lathe machining allowance→quenching and tempering treatment HB240→NC lathe finishing turning→ball surface quenching HRc45: induction heating to 860℃~880℃ Minutes, immediately put in oil or water to cool quickly after coming out of the oven. → Polishing.

[0018] Mushroom head cap adopts 38CrMoAlA process requirements: forging → stress relief annealing → lathe rough processi...

Embodiment 2

[0019] Example 2: The mushroom head adopts 4Cr13 spherical surface quenching HRc45, and the mushroom head cap adopts 38CrMoAlA spherical nitriding HV900.

[0020] The chemical composition of the 38CrMoAlA material used is: C content 0.35-0.42%, Si content 0.20-0.45%, Mn content 0.30-0.60%; Cr content 1.35-1.65%, Mo content 0.15-0.25%; Al content 0.70-1.10%.

[0021] The chemical composition of the 4Cr13 material used is: C content 0.36-0.45%, Si content ≤ 0.60%, Mn content ≤ 0.80%; P content ≤ 0.035%, S content ≤ 0.030%; Cr content 12.0-14.0%.

[0022] Mushroom head adopts 4Cr13 process requirements: forging → stress relief annealing → lathe machining allowance → quenching and tempering HB240 → CNC lathe finishing turning → ball surface quenching HRc45 → polishing.

[0023] Mushroom head cap adopts 38CrMoAlA process requirements: forging → stress relief annealing → lathe rough processing → quenching and tempering treatment HB240 → lathe finishing → polishing → ball surface nit...

Embodiment 3

[0024] Example 3: The mushroom head adopts forged 40Cr ball surface quenching HRc45, and the mushroom head cap adopts QT600-3 spherical nitriding HV600.

[0025] The chemical composition of the 40Cr material used is: C content 0.37-0.44%, Si content 0.17-0.37%, Mn content 0.50-0.80%; Cr content 0.80-1.10%.

[0026] The chemical composition of the QT600-3 material used is: C content 3.56-3.85%, Si content 1.83-2.56%, Mn content 0.49-0.70%; S content 0.016-0.045%, P content 0.035-0.058%; RxOy content 0.033-0.049 %; Mg content 0.041 ~ 0.067%.

[0027] Mushroom head adopts forging 40Cr process requirements: forging→stress relief annealing→lathe machining allowance→quenching and tempering HB240→NC lathe finishing turning→ball surface quenching HRc45→polishing.

[0028] The mushroom head cap adopts QT600-3 process requirements: casting → normalizing HB220 → lathe rough machining → quenching and tempering treatment HB240 → lathe finishing → ball surface nitriding treatment Heat for...

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Abstract

The invention belongs to the field of metal materials, and relates to the selecting of the materials of a mushroom head and a mushroom headgear of a bottom hinge of a ship lock gate and the improvement for processing technology. The material of the mushroom head for the bottom hinge of the ship lock gate is 40 chromium or 4 chromium 13, and the material of the mushroom headgear which is engaged with the mushroom head is 38 CrMoAlA or QT 600-3. The mushroom head uses 40 Cr and 4Cr13 materials, whose hardness value is 45, the mushroom headgear uses 38CrMoAlA materials, whose hardness value is 900, and the hardness value of the QT 600-3 materials is 600. The invention provides the machining process of the above materials, the materials of the mushroom head and the mushroom headgear and the surfaces use a reasonable treatment process, and the hardness value of the materials of the mushroom head and the mushroom headgear which are engaged are reasonably collocated, thereby greatly improving the wear resistance of friction pair and playing a key role to guarantee the safe operation of a ship lock and prolong the repair cycle of the ship lock, and the economic benefits is remarkable.

Description

technical field [0001] The invention belongs to the field of metal materials, and relates to the selection of mushroom head and mushroom head cap material of the bottom pivot of a ship lock gate and the improvement of the processing technology. Background technique [0002] Ship locks are mainly distributed on the main channel and play an important role in water transportation. With the development of national economic construction, the volume of water transportation has increased rapidly, making the throughput of many ship locks greatly exceed the design capacity, and the opening volume of ship locks has increased from more than 30 times per day to more than 50 times at present. While the opening amount of the lock increases, the loss of the moving parts of the lock is also increased. Many ship locks are often suspended for emergency repairs due to the failure of the lock's moving parts, which has a serious impact on water transportation. The wear and tear of the moving p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/18E02B7/20C22C38/22C21D9/00C21D11/00C21D1/10C23C8/26
CPCY02P10/25
Inventor 许民王建民林江沈伯明谢炳康徐斌夏炜杨本
Owner JIANGSU PROVINGIAL TRANSPORTATION ENG GRP
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