Lapidary treatment presses a tooth to curium with diamond a development is dynamic

5, and the Mohs hardness of the nephrite in jade is 4.

5 ～ 5.

5, the hardness that waits like Burmese halcyon is jadeite 6.

5 ～ 7. Common ground is told, jade makings heals precious, its machine difficulty to heal big. Because besides hardness tall outside this one reason, precious jade makings has a requirement to cut seam fine, tangent plane the slashing requirement that beautiful, jade expects the loss cuts the ground. The horniness such as international home jade, gem is precious the cut of material curiums a product make have normally undermentioned approach of two kinds of techniques: (1) pulverous metallurgy hot pressing and soldering technique: Be about to the hot pressing after the metallic powder such as diamond grain and bronze mixes becomes cut wear-resisting link (or piece) , solder wear-resisting annulus next at curiuming a matrix on. This kind curiums piece use at cut jade to expect existence is worn cut efficiency is low, cut seam makings of bulky, jade to wear away to wait for the heel of Achilles badly. (2) eletroplate diamond curiums piece: Curiuming namely a predestined relationship outside matrix after opening slot, asperse equably on diamond, make with eletroplating method matrix and diamond are united in wedlock next. This kind of method produces curium piece can cut is all jade makings, work efficiency is very tall also. But put in following defect: Grain of the diamond when ① eletroplates will be adherent curiuming the blame brim of a matrix is in, make curium a ply increase, cut seam broaden, increased jade makings loss thereby; Because ② eletroplates groovy limitation, the curiuming that cannot produce large size piece; ③ eletroplates the environment with craft serious existence pollutes a problem. The treatment jade that the article introduces my company proper motion simply to develop, gem presses a tooth to curium with diamond piece technical course. The felt of grain of making synthetic diamond that the binder that this project uses the technical course of 2 projects to be developed by oneself will chosen becomes a group piece shape, buy is entered curium via designing calculative accurately a chamfer of matrix brim mill is medium, use science to be pressed reasonably delay craft to make curium the metal has an edge the plasticity of appropriate level is out of shape, have very good fixed effect to diamond single crystal thereby. This kind is not used eletroplate fixed method, can do big diameter piece avoided to eletroplate again the pollution to the environment. 3 development brief introduction 3. 1 abrasive chooses what this project develops to press a tooth to curium piece be choose and employ persons builds diamond to regard cut acute as body, need to ask to choose the granuality of diamond abrasive and chroma according to processing technique. As a result of cut jadeite curium a measurement is different, have diverse demand to the granuality of diamond, chroma. My company produces curium a diameter from Φ 200 ～ Φ 1250, share 13 cent archives. We single out 3 size number and 2 kinds of chroma to undertake contrasting experimenting filtration beforehand to every dimension, determined the product of 13 kinds of different measurement and diamond size thereby. 3. 2 matrix choice and treatment curium an intensity that matrix asks it is certain to have already, ask to have corresponding tenacity and plasticity again. Plant in steel the basis after the choice curiums a dimension have mechanical consideration, the intensity that affirmatory ply asks with satisfying application to go up. Another action that intensity asks is to assure cut efficiency, and plasticity and tenacity should be offerred curium piece making pressing a tooth to press the metal with enough delay time to be out of shape spend, with group of grain of firm support diamond piece and assure cutting. Via detailed computation and experiment, the thin stencil steel of high grade cold rolling that make choice of imports with Japan serves as base material. Its chemistry component is: C ＜ 0.

08% , mn=0.

30% ～ 0.

45% , al=0.

02% ～ 0.

07% , mechanical function is " б B=260 ～ 10 ≥ of 240mm2 of ＜ of S of 350N/mm2, б , δ 39 ％ " , had these function to assure, matrix is being cut into travel turning, constitution, press delay time to all can accord with a technology to ask. 3. 3 binder trial-produce passes 10 ～ the experiment of 15 category is comparative, decided YJ204 special binder. This binder can make diamond grain flexible adhesion, assure bonding strength already, the metallic extruding force that ability press press delays craft. Issue observation from microscope, the oil that there is a half solidify between the granule of making synthetic diamond of felt sticks conjunctiva. When delaying stress without press press, felt film ply is bigger; Area of film of the felt after classics press press delays extruding expands, ply decrescent, but the granule that keeps very good from beginning to end is united in wedlock. 3. 4 pressure delay craft to be pressed to facilitate extend an operation, we design the corresponding pattern that fits all sorts of product measure by oneself, the appearance of the mould and curium chamfer of spool aperture, edge all has cooperate very well. Had the assurance of the mould, can make of base metal pressure delay be out of shape basic concentration is in tooth chamfer part. Metabolic tooth chamfer and inside the making synthetic diamond of the bag is round piece close together union shows protruding ball together fluctuant join shape, such tooth most be helpful for jadeite curium cut. In the light of control the option that extends craft parameter, we enter those who went about a hundred times to press on mechanical calculative foundation postpone a trial, the deflection that falls to all sorts of pressure intensity made determine accurately and be recorded. Press in what choose on manufacturing technology at present delay mechanical parameter and curium piece the diameter has very good corresponding sex. The new-style and patent diamond that our company develop 4 conclusion by oneself presses a tooth to curium a success overcame other place of stuff of horniness of two kinds of cut is used curium piece defect. Its characteristic is: (1) this project product can cut jade expects especially the precious jade such as jadeite (material of cut other horniness also does not have a problem) , cut efficiency is tall, oriented the gender is good. (2) press a tooth to curium piece do not suffer eletroplate craft limitation, be done curium piece big, thin (of diametical 1250mm curium a ply it is only 2.

5mm) , cut seam fine, tangent plane beautiful, make jade expects the loss is small. (3) avoided to eletroplate the craft pollution to the environment. CNC Milling