Patassium dihydrogen phosphate crystal slaking and finishing method

A technology of potassium dihydrogen phosphate and crystal, applied in the field of deliquescence polishing of potassium dihydrogen phosphate crystal, can solve the problems of difficult cleaning of polishing liquid, removal of abrasive grains, low processing efficiency, etc., and achieves novel method, easy cleaning and high processing efficiency. Effect

Inactive Publication Date: 2008-11-26
HARBIN INST OF TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] In order to solve the problem that small-scale ripples will be produced when the KDP crystal is processed by the existing single-point diamond cutting technology, the present invention uses the ultra-precision grinding technology to process the KDP crystal. Abrasive grains are difficult to remove from the KDP crystal surface, and the magnetorheological polishi

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  • Patassium dihydrogen phosphate crystal slaking and finishing method
  • Patassium dihydrogen phosphate crystal slaking and finishing method

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specific Embodiment approach 1

[0021] Specific implementation mode one: combine figure 1 The present embodiment will be described. The steps of the polishing method of the present embodiment are as follows:

[0022] Step 1. The KDP crystal polishing device is composed of a polishing pad 1, a deliquescent polishing liquid dripper 2, a polishing disc 3 and a sample loading disc 5. The polishing pad 1 is set on the upper surface of the polishing disc 3, and the sample loading disc 5 is set on the polishing pad Above the optical disk 3, the sample loading disk 5 and the polishing disk 3 are respectively connected with the rotating mechanism and arranged facing each other;

[0023] Step 2, fixing the KDP crystal 4 blank on the bottom end surface of the sample loading tray 5, and using the existing cutting technology to pretreat the surface to be polished of the KDP crystal 4 blank;

[0024] Step 3, activate the pressure control switch to apply pressure longitudinally to the sample tray 5, and the pressure valu...

specific Embodiment approach 2

[0027] Specific implementation mode two: combination figure 2 The present embodiment will be described. The steps of the polishing method of the present embodiment are as follows:

[0028] Step 1, the KDP crystal polishing device is composed of a polishing pad 1, a polishing disc 3, a sample loading disc 5, a sealing cover 6, a water vapor input pipeline 7 and a water vapor recovery pipeline 8, and the polishing pad 1 is arranged on the upper surface of the polishing disc 3 , the sample loading tray 5 is arranged on the top of the polishing tray 3, the water vapor input pipeline 7 is arranged on the upper right side of the sealing cover 6, the water vapor recovery pipeline 8 is arranged on the lower left side of the sealing cover 6, the sample loading tray 5 and the polishing tray 3 are respectively It is connected with the rotating mechanism and arranged opposite to each other;

[0029] Step 2, fixing the KDP crystal 4 blank on the bottom end surface of the sample loading ...

specific Embodiment approach 3

[0033] Embodiment 3: In step 3 of this embodiment, when the size of the surface of the KDP crystal to be polished is 18 mm×12 mm, the longitudinal pressure applied to the sample loading plate 5 is 0.14 MPa.

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Abstract

The invention discloses a deliquescence polishing method for a potassium dihydrogen phosphate (KDP) crystal, which relates to the polishing method for crystals and solves problems that when an existing ultra-precision machining method is adopted to process the KDP crystal, small size ripples and embedment of particles probably occur on the surface of the KDP crystal, the surface of the KDP crystal is difficult to be washed and the existing ultra-precision machining method is low in processing efficiency and high in cost. The deliquescence polishing method of the invention is that 1. a KDP crystal polishing device is adopted; 2. the surfaces to be polished of the stock of a KDP crystal (4) are pretreated; 3. certain pressure is imposed on a sample carrying tray (5) longitudinally; 4. the surfaces of the KDP crystal treated by the step 2 are deliquesced by adopting deliquescence polishing solution or water vapor; 5. a control switch of the sample carrying tray (5) and a control switch of a polishing disk (3) are started and then deliquescence polishing is carried out on the surfaces of the KDP crystal treated by the step 2. The deliquescence polishing method of the invention is novel, unique, simple and has the advantages of high processing efficiency and low cost, no small size ripples on the surfaces of the KDP crystal processed by the method, no embedment of particles; the surfaces of the KDP crystal processed by the method are easily washed and the surface roughness can reach 1nm to 8nm.

Description

technical field [0001] The present invention relates to a crystal polishing method. Background technique [0002] KDP crystal is potassium dihydrogen phosphate (KH 2 PO 4 ) crystal for short, is a class of excellent electro-optical nonlinear optical materials developed in the 1940s, and is widely used in high-tech fields such as laser frequency conversion, electro-optic modulation, and optical fast switching. In laser inertial confinement fusion, KDP Crystals are used in optical doubler converters and electro-optical switches. However, KDP crystal has the characteristics of soft quality, easy deliquescence, high brittleness, and sensitivity to temperature changes. These characteristics are very unfavorable to its processing. Large-scale high-precision optical KDP crystal parts are currently recognized as one of the most difficult optical parts to process. In order to obtain KDP crystal parts with large size and high optical quality, many scholars at home and abroad have c...

Claims

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Application Information

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IPC IPC(8): B24B9/14B24B7/22C30B29/14
Inventor 张飞虎郭少龙张勇
Owner HARBIN INST OF TECH
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