Container corner fitting and heat treatment process thereof

A technology for containers and corner fittings, which is applied in heat treatment furnaces, heat treatment equipment, metal material coating processes, etc., can solve problems such as insufficient strength and low-temperature toughness, and achieve the effects of ensuring production costs, ensuring steel properties, and improving low-temperature toughness

Active Publication Date: 2019-07-26
MAANSHAN SHENGLEI WEAR RESISTANT ALLOY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problem of insufficient strength and low-temperature toughness of container corner fittings in the prior art, the present invention provides a container corner fitting

Method used

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  • Container corner fitting and heat treatment process thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A container corner fitting in this embodiment, the alloy composition of the container corner fitting is composed of the following elements in terms of mass percentage: 0.09-0.15% C, 0.95-1.40% Mn, 0.27-0.36% Si, 0.19-0.26% Ni , 0.15-0.22% Cr, 0.007-0.015% Al, up to 0.03% P, up to 0.03% S, up to 0.08% Mo, up to 0.17% Cu, up to 0.01% V, and the balance is Fe and unavoidable impurities. Specifically, in this embodiment, it consists of the following element contents: 0.09% C, 0.95% Mn, 0.27% Si, 0.19% Ni, 0.15% Cr, 0.007% Al, 0.01% P, 0.01% S, 0.04% Mo, 0.10% Cu, 0.01% V, the balance being Fe and unavoidable impurities, wherein Ni / Cr=1.27, Mn / Si=3.5, a container corner fitting of this embodiment is treated by the following heat treatment process:

[0047] 1. Carburizing, put the corner fittings of the container into a high-temperature furnace tank at 920°C, add dilute gas methanol and enriched gas ethyl acetate dropwise into the high-temperature furnace tank, and continue c...

Embodiment 2

[0052] A container corner fitting in this embodiment, the alloy composition of the container corner fitting is composed of the following elements in terms of mass percentage: 0.09-0.15% C, 0.95-1.40% Mn, 0.27-0.36% Si, 0.19-0.26% Ni , 0.15-0.22% Cr, 0.007-0.015% Al, up to 0.03% P, up to 0.03% S, up to 0.08% Mo, up to 0.17% Cu, up to 0.01% V, and the balance is Fe and unavoidable impurities. Specifically, in this embodiment, it consists of the following element contents: 0.15% C, 1.40% Mn, 0.36% Si, 0.26% Ni, 0.22% Cr, 0.015% Al, 0.03% P, 0.03% S, 0.08% Mo, 0.17% Cu, 0.01% V, the balance is Fe and unavoidable impurities, wherein Ni / Cr=1.18, Mn / Si=3.9, a container corner fitting of this embodiment is treated by the following heat treatment process:

[0053] 1. Carburizing, put the corner fittings of the container into a high-temperature furnace tank at 940°C, add dilute gas methanol and enriched gas ethyl acetate dropwise into the high-temperature furnace tank, and continue carb...

Embodiment 3

[0058] A container corner fitting according to this embodiment, the alloy composition constituting the container corner fitting is composed of the following elements in terms of mass percentage: 0.09-0.15% C, 0.96-1.37% Mn, 0.32-0.36% Si, 0.19-0.26% Ni , 0.18-0.21% Cr, 0.007-0.015% Al, up to 0.015% P, up to 0.015% S, up to 0.08% Mo, up to 0.17% Cu, up to 0.01% V, and the balance is Fe and unavoidable impurities. Specifically, in this embodiment, it consists of the following element contents: 0.09% C, 0.96% Mn, 0.32% Si, 0.19% Ni, 0.18% Cr, 0.007% Al, 0.01% P, 0.01% S, 0.04% Mo, 0.10% Cu, 0.01% V, the balance being Fe and unavoidable impurities, wherein Ni / Cr=1.06, Mn / Si=3.0, a container corner fitting of this embodiment is treated by the following heat treatment process:

[0059] 1. Carburizing, put the corner fittings of the container into a high-temperature furnace tank at 920°C, add dilute gas methanol and enriched gas ethyl acetate dropwise into the high-temperature furnac...

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Abstract

The invention discloses a container corner fitting, and belongs to the field of container materials. The alloy compositions of the container corner fitting are composed of the following elements, by the mass percent, of 0.09-0.15% of C, 0.95-1.40% of Mn, 0.27-0.36% of Si, 0.19-0.26% of Ni, 0.15-0.22% of Cr, 0.0007-0.015% of Al, being no more than 0.03.% of P, being no more than 0.03% of S, being no more than 0.08% of Mo, being no more than 0.17% of Cu, being no more than 0.01% of V, and the balance Fe and inevitable impurities, wherein Ni / Cr=1.00-1.25, Mn / Si=3.0-3.8, and Ni + Cr + Mo +Cu is equal to or less than 0.72% by the mass percent. The alloy compositions of the container corner fitting are improved, on the premise of guaranteeing the production cost, the strength of the corner fitting is improved, the toughness is greatly improved at the low temperature, and the corner fitting also has good welding performance.

Description

technical field [0001] The invention relates to the field of container materials, in particular to a container corner fitting and a heat treatment process thereof. Background technique [0002] Corner fittings are important parts of the container, and play a key role in the lifting, handling, fixing, stacking and bolting of the container. Most of the force on the box is almost transmitted by the corner fittings. At the same time, As the outermost edge of the box body, the corner fittings also play a role in protecting the container body. [0003] At present, with the development of the transportation industry, the volume of import and export trade has increased sharply. When container transportation is carried out in some high-latitude areas, due to the low temperature, the toughness of the steel made of corner fittings is greatly reduced at low temperatures, and brittleness is very easy to occur. Therefore, the steel of the corner fittings needs to be able to withstand low...

Claims

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Application Information

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IPC IPC(8): C22C38/04C22C38/02C22C38/06C22C38/44C22C38/42C22C38/46C22C38/40C23C8/22C23C8/80C21D1/18C21D9/00B65D90/00
CPCB65D90/00C21D1/18C21D9/0068C22C38/02C22C38/04C22C38/06C22C38/40C22C38/42C22C38/44C22C38/46C23C8/22C23C8/80
Inventor 杨明
Owner MAANSHAN SHENGLEI WEAR RESISTANT ALLOY MFG
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