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A preparation method of beryllium sheet used as main detector window of space astronomical satellite

A main detector and astronomical technology, applied in the direction of manufacturing tools, metal rolling, metal rolling, etc., can solve the problems of small effective area size, poor uniformity of thickness size, low product qualification rate, etc., to achieve large effective area size, The effect of uniform thickness and size and high product qualification rate

Active Publication Date: 2021-06-22
西北稀有金属材料研究院宁夏有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The warm rolling process adopts conventional one-way vertical rolling, the distribution of single reduction is large, and the rolling passes between two heat treatments are less; conventional pickling is used for surface cleaning, but the surface quality of the obtained beryllium sheets is poor , poor thickness uniformity, low air tightness, low product qualification rate and small effective area size; at the same time, it is very easy to be brittle, cracked, and cracked during the rolling process, making it difficult to roll out the area size Larger Beryllium Plates

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Step 1. Hot rolling the rolled beryllium plate, wherein the hot rolling temperature is 700°C, the holding time is 60 minutes, the total hot rolling processing rate is 70%, and the pass processing rate is 10%.

[0036] Step 2: Processing the left and right sides of the hot-rolled beryllium plate with semi-circular arcs at equal intervals, and then performing semi-circular arc surface treatment. The equidistant distance is 20mm; the size of the semi-circular arc is φ3mm.

[0037] Step 3. Use small reduction distribution and multi-pass rolling to warm-roll the beryllium plate after the semi-circular surface treatment; and place the beryllium plate after the warm-rolled stress-relief heat treatment horizontally on the basis of 500ml phosphoric acid + 50g Chromic anhydride + 30ml glycerin + 10ml alcohol + 5ml hydrofluoric acid has undergone a violent chemical reaction, and the chemical cleaning time is 5 minutes in the remaining acid solution 2 hours after the violent chemic...

Embodiment 2

[0048] Step 1. Hot rolling the rolled beryllium plate, wherein the hot rolling temperature is 800°C, the holding time is 45 minutes, the total hot rolling processing rate is 75%, and the pass processing rate is 15%.

[0049] Step 2: Processing the left and right sides of the hot-rolled beryllium plate with semi-circular arcs at equal intervals, and then performing semi-circular arc surface treatment. The equidistant distance is 22mm; the size of the semi-circular arc is φ4mm.

[0050]Step 3. Use small reduction distribution and multi-pass rolling to warm-roll the beryllium plate after the semi-circular surface treatment; and place the beryllium plate after the warm-rolled stress-relief heat treatment horizontally on the basis of 1500ml phosphoric acid + 200g Chromic anhydride + 200ml glycerin + 30ml alcohol + 25ml hydrofluoric acid formula has undergone a severe chemical reaction and 3.5 hours after the violent chemical reaction, the remaining acid solution is used for chemica...

Embodiment 3

[0062] Step 1. Hot rolling the rolled beryllium plate, wherein the hot rolling temperature is 950°C, the holding time is 25 minutes, the total hot rolling processing rate is 85%, and the pass processing rate is 20%.

[0063] Step 2: Processing the left and right sides of the hot-rolled beryllium plate with semi-circular arcs at equal intervals, and then performing semi-circular arc surface treatment. The equidistant distance is 25mm; the size of the semi-circular arc is φ5mm.

[0064] Step 3. Use small reduction distribution and multi-pass rolling to warm-roll the beryllium plate after the semi-circular surface treatment; and place the beryllium plate after the warm-rolled stress-relief heat treatment horizontally on the basis of 2000ml phosphoric acid + 300g Chromic anhydride + 100ml glycerin + 50ml alcohol + 40ml hydrofluoric acid has undergone a violent chemical reaction and 3.5 hours after the violent chemical reaction, the remaining acid solution is used for chemical clea...

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Abstract

The invention discloses a method for preparing a beryllium sheet used as a main detector window of a space astronomical satellite. The preparation method for the beryllium sheet includes the following steps: step 1, hot rolling the rolled beryllium sheet; step 2, hot rolling the rolled beryllium sheet The left and right sides of the beryllium plate are subjected to semi-circular arc surface treatment after equidistant semi-circular arc processing; step 3, using small reduction distribution and multi-pass rolling to warm the beryllium plate after semi-circular arc surface treatment. rolling; and after the warm-rolled beryllium plate is subjected to stress-relief heat treatment, it is placed horizontally in the pickling solution for residual acid washing; step 4, the finished product heat treatment and product line cutting are sequentially carried out on the remaining acid-washed beryllium plate. All the technical indicators of the beryllium sheet prepared by the invention can meet the requirements of the main detector window of the space astronomical satellite (wisdom eye), and the qualified rate is high.

Description

technical field [0001] The invention belongs to the technical field of beryllium material rolling, and relates to a method for preparing a beryllium sheet used as a main detector window of a space astronomical satellite. Background technique [0002] The material for the main detector window of the space astronomical satellite (Huiyan) must be a metal or alloy material with a very high X-ray penetration rate. Among all metals and alloy materials, beryllium is the material with the highest X-ray penetration rate, so The beryllium sheet prepared by rolling the beryllium material is most suitable for the main detector window of the space astronomical satellite. [0003] The crystal structure of beryllium is close-packed hexagonal, and its crystal structure determines the low plasticity of beryllium materials. At the same time, beryllium materials are brittle, so beryllium materials are difficult to roll. The area size of commonly used beryllium sheet products is usually within...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/22B21B15/00C22F1/16C23G1/12
CPCB21B1/22B21B15/00B21B2001/225C22F1/16C23G1/12
Inventor 王唯一王东新刘兆刚徐平陈全礼司祎
Owner 西北稀有金属材料研究院宁夏有限公司
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