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High temperature abrasion resistant guide plate and preparation method thereof

A guide plate, high temperature resistance technology, applied in the direction of guide/positioning/alignment device, etc., can solve the problem of poor process stability of composite wear-resistant guide plate, alloy powder core rod cannot form reinforcing phase, alloy powder core rod collapse and other problems, to achieve the effect of large-scale production, not easy to crack and peel, and long service life

Inactive Publication Date: 2014-04-23
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the stability of the preparation process of the composite wear-resistant guide plate is poor, and the quality is difficult to guarantee
In particular, the pouring temperature is strictly required. If the temperature is too high, the alloy powder mandrel will collapse, and if the temperature is too low, the alloy powder mandrel cannot form a dense reinforcing phase.

Method used

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  • High temperature abrasion resistant guide plate and preparation method thereof
  • High temperature abrasion resistant guide plate and preparation method thereof
  • High temperature abrasion resistant guide plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] like figure 1 As shown, a high-temperature wear-resistant guide plate is composed of WC granular rod-shaped reinforcement phase 1 and high-chromium-nickel alloy matrix 2. The WC granular rod-shaped reinforcement phase 1 is evenly distributed on the surface layer of high-chromium-nickel alloy matrix 2. A "honeycomb" structure is formed on the top, and the volume fraction of the WC granular rod-shaped reinforcement phase 1 accounting for the surface layer of the high-chromium-nickel alloy matrix 2 is 40%;

[0029] The composition weight percent of the high-chromium-nickel alloy substrate 2 is: 1.0%C, 6.0%Ni, 18%Cr, 0.6%Si, 0.8%Mn, <0.05%S, <0.05%P, and the balance is Fe;

[0030] The WC granular rod-shaped reinforcement phase 1 is composed of WC particles and Ni-based solder. The WC particles account for 25% of the volume fraction of the WC granular rod-shaped reinforced phase 1. The WC particle size is 100 mesh, and the Ni-based solder has a particle size of 200 mesh. T...

Embodiment 2

[0040] like figure 1 As shown, a high-temperature wear-resistant guide plate is composed of WC granular rod-shaped reinforcement phase 1 and high-chromium-nickel alloy matrix 2. The WC granular rod-shaped reinforcement phase 1 is evenly distributed on the surface layer of high-chromium-nickel alloy matrix 2. A "honeycomb" structure is formed on the top, and the volume fraction of the WC granular rod-shaped reinforcement phase 1 accounting for the surface layer of the high-chromium-nickel alloy matrix 2 is 40%;

[0041] The composition weight percent of the high-chromium-nickel alloy substrate 2 is: 1.6%C, 8%Ni, 24%Cr, 0.8%Si, 1.0%Mn, <0.05%S, <0.05%P, and the balance is Fe;

[0042] The WC particle rod-shaped reinforcing phase 1 is composed of WC particles and Ni-based solder. The WC particle accounts for 35% of the volume fraction of the WC particle rod-shaped reinforcing phase 1. The WC particle size is 200 mesh, and the Ni-based solder particle size is 400 mesh. The compos...

Embodiment 3

[0052] like figure 1 As shown, a high-temperature wear-resistant guide plate is composed of WC granular rod-shaped reinforcement phase 1 and high-chromium-nickel alloy matrix 2. The WC granular rod-shaped reinforcement phase 1 is evenly distributed on the surface layer of high-chromium-nickel alloy matrix 2. A "honeycomb" structure is formed on the top, and the volume fraction of the WC granular rod-shaped reinforcing phase 1 accounting for the surface layer of the high-chromium-nickel alloy matrix 2 is 75%;

[0053] The composition weight percent of the high-chromium-nickel alloy substrate 2 is: 2.0%C, 10%Ni, 28%Cr, 1.0%Si, 1.2%Mn, <0.05%S, <0.05%P, and the balance is Fe;

[0054] The WC particle rod-shaped reinforcing phase 1 is composed of WC particles and Ni-based solder. The WC particles account for 50% of the volume fraction of the WC particle rod-shaped reinforcing phase 1. The composition weight percentage of solder is: 14%Cr, 3.5%B, 5.0%Si, 5.0%Fe, 0.2%C, the balance...

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Abstract

A high temperature abrasion resistant guide plate is formed by compounding WC particle rod-shaped strengthening phase and a high chrome-nickel substrate. A honeycomb-shaped structure is formed on a macroscopic view, and a preparation method comprises the following steps of: preparing a high chrome-nickel guide plate, then machining blind holes which are evenly arranged in a work surface layer of the high chrome-nickel guide plate at stagger, placing WC particles and Ni base brazing filler metal in a ball mill for ball milling and mixing, adding phenolic resin and absolute ethyl alcohol in mixture, evenly mixing to press blanks and pellet, then filling obtained powder in the blind holes in the work surface layer of the high chrome-nickel guide plate and pressing to be solid, placing the high chrome-nickel guide plate with pressed powder into a drying oven for drying, placing dried high chrome-nickel guide plate into a vacuum oven or a gas shield oven for burning and brazing, and then conducting furnace cooling to a room temperature. The high temperature abrasion resistant guide plate has the advantages of being high in hardness and good in abrasive resistance and inoxidizability. The preparation method is simple in process, low in cost and high in process stability.

Description

technical field [0001] The invention relates to the technical field of preparation of guide plates for rolling mills, in particular to a high-temperature wear-resistant guide plate and a preparation method thereof. Background technique [0002] The guide plate is one of the important auxiliary parts of the steel profile rolling machine. During their service, they are in direct contact with fast-moving high-temperature steel billets with a temperature of up to 900°C, and are subjected to high-temperature wear, impact, extrusion, oxidation, and chilling from cooling water. The working environment is extremely harsh, and the scrap rate is extremely high. The service life of the guide plate directly affects the output and production cost of steel. Therefore, the design and preparation of the guide plate have been highly valued by engineers and material workers for a long time. Harsh working conditions require that the positioning plate must have good high temperature strength, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/56C22C38/60C22C38/40C22C32/00C22C30/00C22C29/08C22C1/08B21B39/14
Inventor 鲍崇高侯书增邢建东高义民
Owner XI AN JIAOTONG UNIV
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