A kind of ctp printing plate base aluminum strip material and its preparation process

A technology of aluminum strip and plate base, applied in printing process, printing, printing plates, etc., can solve the problems of surface flatness damage, printing plate quality guarantee, etc., achieve good mechanical properties, improve appearance quality, and improve mechanical properties Effect

Active Publication Date: 2019-12-31
威海海鑫新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the raw material is hot-rolled, the non-metallic inclusions (mainly sulfides and oxides, as well as silicates) inside the material are pressed into thin sheets, and a layered (interlayer) phenomenon occurs. When the sheet is on the surface of the material , will cause great damage to the flatness of the surface, especially when the hot-rolled blank is used as the base blank of the printing plate, the longitudinal stripes on the surface of the base blank obtained are obvious, resulting in the quality of the printing plate is not guaranteed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A CTP printing plate-based aluminum strip, the strip includes the following elements by weight percentage:

[0026] Si: 0.07%, Fe: 0.3%, Mg: 0.12%, Mn: 0.015%, Zn: 0.002%, V: 0.01%, Ti: 0.011%, Cu: 0.001%, Cr: 0.006%, the balance is aluminum, The surface roughness Ra value of the strip is 0.16~0.21μm.

[0027] The preparation technology of above-mentioned strip comprises the following steps:

[0028] 1) Raw material smelting: put the furnace material mixed according to the above weight percentage into the melting furnace, and smelt it under the condition of 720-800°C to form a uniform alloy melt; when the temperature of the alloy melt is 700-720°C, blow it with nitrogen Refining agent for refining, nitrogen flow rate 2.3~3.0m³ / h, stirring for 30 minutes after refining, when the temperature is 730~780°C, transfer the refining liquid to a standing furnace for standing; add to the melt after refining and standing AlTiB wire with a diameter of 5-10mm is used as a grain re...

Embodiment 2

[0035] The difference between this example and Example 1 is that the strip contains the following elements by weight percentage: Si: 0.11%, Fe: 0.4%, Mg: 0.18%, Mn: 0.036%, Zn: 0.004%, V: 0.02% , Ti: 0.014%, Cu: 0.006%, Cr: 0.009%, the balance is aluminum, and the surface roughness Ra value of the strip is 0.15~0.25μm.

[0036] Step 4) During the low temperature hot rolling process, the final rolling temperature is 240~280°C;

[0037] Step 5) During the low-temperature annealing process, the temperature of the furnace gas in the second stage is 462-470°C.

[0038] Product appearance quality: thickness deviation < 0.005mm, width deviation < 0.5mm, convexity rate < 0.24%, hydrogen content < 0.065mL / 100gAl; the surface of the strip is smooth and free of streaks, uniform in color, free of light and dark stripes, water ripples and other defects .

Embodiment 3

[0040] The difference between this embodiment and Embodiment 1 is that the strip contains the following elements by weight percentage: Si: 0.08%, Fe: 0.035%, Mg: 0.16%, Mn: 0.025%, Zn: 0.004%, V: 0.02% , Ti: 0.012%, Cu: 0.003%, Cr: 0.007%, the balance is aluminum, and the surface roughness Ra value of the strip is 0.18~0.22μm.

[0041] Step 4) During the low-temperature hot rolling process, the final rolling temperature is 240-250°C;

[0042] Step 5) During the low-temperature annealing process, the temperature of the furnace gas in the second stage is 465°C.

[0043] Product appearance quality: thickness deviation < 0.005mm, width deviation < 0.5mm, convexity rate < 0.24%, hydrogen content < 0.065mL / 100gAl; the surface of the strip is smooth and free of streaks, uniform in color, free of light and dark stripes, water ripples and other defects .

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Abstract

The invention provides a Computer-to-plate (CTP) printing plate base aluminum strip and a preparation technology thereof. The strip comprises the following elements in percentage by weight: 0.07-0.11%of Si, 0.3-0.4% of Fe, 0.12-0.18% of Mg, 0.015-0.036% of Mn, 0.002-0.004% of Zn, 0.01-0.02% of V, 0.011-0.014% of Ti, 0.001-0.005% of Cu, 0.006-0.009% of Cr, and the balance aluminum; and the surfaceroughness Ra of the strip is 0.15-0.25 microns. The preparation technology comprises the steps of smelting raw materials, casting a slab ingot, thermally processing the slab ingot, thermally rollingunder low temperature, and preparing the strip. According to the CTP printing plate base aluminum strip prepared by the method, longitudinal stripy textures on the surface of a printing plate base blank can be effectively improved, and moreover, the mechanical performances are outstanding in both normal temperature and high temperature; and moreover, the strip has the advantages of being high in ductility, high in corrosion uniformity, and high in baking temperature resistance; and the printing times of downstream customers and the quality of a printing plate base can be obviously improved.

Description

technical field [0001] The invention belongs to the technical field of CTP printing, and in particular relates to a preparation process of a CTP printing plate base material. [0002] technical background [0003] CTP (Computer-to-Plate) technology has gradually replaced the traditional analog plate-making method due to its advantages of digitalization, high efficiency and high quality, simplicity, and environmental protection, and has become a way for printing companies to achieve technological upgrades. At present, hot-rolled billet 1050 alloy or hot-rolled billet 1052 alloy is generally used in the market to produce printing plate base stock. After the raw material is hot-rolled, the non-metallic inclusions (mainly sulfides and oxides, as well as silicates) inside the material are pressed into thin sheets, and a layered (interlayer) phenomenon occurs. When the sheet is on the surface of the material , will cause great damage to the flatness of the surface, especially when...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/00B21C37/04B41N1/04C22C1/02
CPCB21C37/04B41N1/04C22C1/026C22C21/00
Inventor 陈德波王强刘纯森叶映才吴劲草
Owner 威海海鑫新材料有限公司
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