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Preparation method of iron-containing zirconium alloy cast ingot

A zirconium alloy and ingot casting technology, which is applied in the field of preparation of iron-containing zirconium alloy ingots, can solve the problems of poor uniformity and increasing control difficulty, and achieve the effects of uniform distribution, stable product quality and good performance

Active Publication Date: 2022-04-15
西安西部新锆科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the addition of iron elements in commonly used zirconium alloys is basically pure metal iron, but its uniformity in zirconium alloy ingots is poor. With the increase of iron content in new zirconium alloys, the difficulty of controlling iron elements in zirconium is also increasing. Therefore, there is an urgent need for a method for preparing iron-containing zirconium alloy ingots

Method used

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  • Preparation method of iron-containing zirconium alloy cast ingot
  • Preparation method of iron-containing zirconium alloy cast ingot
  • Preparation method of iron-containing zirconium alloy cast ingot

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preparation example Construction

[0032] A method for preparing an iron-containing zirconium alloy ingot, comprising the following steps:

[0033] Step 1. Select sponge zirconium and pure iron filings / granules, the weight of pure iron filings / granules accounts for 10% to 20% of the total weight, and the size of the iron filings is: length 3-8mm, width 2-5mm, thickness 0.1-0.2 mm, according to the required weight of each electrode block, divide the sponge zirconium and iron filings into several equal parts, and each equal part is used to press an electrode block: first divide each equal part of sponge zirconium into half and add it to the press In the mold cavity, sprinkle iron filings evenly on the sponge zirconium in the mold cavity, then add the other half of the sponge zirconium, and finally press it on a 50MN press, where the electrode block is a rod-shaped electrode;

[0034] Step 2. Weld a plurality of electrode blocks in a vacuum plasma welding box to form a consumable electrode. The welding current is ...

Embodiment 1

[0045] Step 1. Select sponge zirconium and prepared pure iron filings (brand YT-1), and calculate the required sponge zirconium and iron filings weights according to the Fe element content and feeding amount in sponge zirconium. In this embodiment, the weight of Fe accounts for the total The feeding ratio is 10%, the total feeding is 500kg, the size of iron filings: length×width×thickness: 3mm×2mm×0.2mm;

[0046] Step 2, preparing the prepared zirconium sponge and iron filings into electrodes; the electrode preparation process includes the following steps:

[0047] Electrode pressing: The weighed zirconium sponge and iron filings are jointly pressed into 20 electrode blocks with a weight of 25kg / block, and the specification is Φ110mm×300mm. When pressing, divide the weighed zirconium sponge into half and add it to the cavity of the press. Then add the weighed iron filings and sprinkle evenly on the sponge zirconium in the mold cavity, then add the other half of the sponge zirc...

Embodiment 2

[0060] Step 1. Select sponge zirconium and prepared pure iron filings (brand YT-1), and calculate the required sponge zirconium and iron filings weights according to the Fe element content and feeding amount in sponge zirconium. In this embodiment, the weight of Fe accounts for the total The feeding ratio is 15%, the total feeding is 660kg, the size of iron filings: length×width×thickness: 5mm×3mm×0.2mm;

[0061] Step 2, preparing the prepared zirconium sponge and iron filings into electrodes; the electrode preparation process includes the following steps:

[0062] Electrode pressing: The weighed zirconium sponge and iron filings are jointly pressed into 22 electrode blocks with a weight of 30kg / block, and the specification is Φ160mm×300mm. When pressing, divide the weighed zirconium sponge into half and add it to the cavity of the press. Then add the weighed iron filings and sprinkle evenly on the sponge zirconium in the mold cavity, then add the other half of the sponge zirc...

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Abstract

The invention relates to a preparation method of an iron-containing zirconium alloy cast ingot, which comprises the following steps: mixing sponge zirconium, zirconium-iron intermediate alloy particles and one or more alloy components of tin, niobium, chromium and nickel, and smelting to finally prepare the zirconium alloy cast ingot with uniform iron element content. The zirconium alloy cast ingot prepared through the method is good in performance, the requirements of subsequent finished products are met, the problem of uniform control over the iron element in the zirconium alloy is solved, the application prospect is wide, industrial production is easy to achieve, the automation degree is high, and the prepared product is stable in quality and good in economical efficiency.

Description

technical field [0001] The invention belongs to the technical field of zirconium alloy preparation, and in particular relates to a method for preparing an iron-containing zirconium alloy ingot. Background technique [0002] After entering the 21st century, my country's nuclear power industry has entered a stage of rapid development, and the demand for zirconium alloys as nuclear power cladding materials has increased significantly, and the localization of zirconium alloys is also gradually progressing. In order to improve the economy of nuclear power, the new-generation reactor technology has higher and higher requirements for fuel consumption, and the refueling time of the zirconium alloy cladding tube has been further extended. content and tended to increase gradually. At present, the addition of iron elements in commonly used zirconium alloys is basically pure metal iron, but its uniformity in zirconium alloy ingots is poor. With the increase of iron content in new zirco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C16/00C22B9/20B22D7/00
Inventor 严宝辉田锋周军石明华刘海明范清松袁波魏统宇
Owner 西安西部新锆科技股份有限公司
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