The present invention relates to manufacturing technique for a kind of diamond saw blade, especially the manufacturing technique for a diamond blade adopted to process stone material, to slit cement pavement, or to cut cement product into blocks. A diamond pregnant inlaid blade is made under electroplating method at an ordinary temp., and the pregnant inlaid blade is inlaid and welded to the matrix of saw blade to make diamond saw blade. This technique used to make diamond saw blade can raise the cutting efficiency, prolong the service life of the saw blade, and increase the combining strength between the blade and the cutter edge; so that the artificial diamond of low-grade can be made to acheive development and utilization.
The present invention relates to a process for manufacturing diamond saw blade, especially for stone processing, cement pavement kerf, cement products cut diamond saw blade manufacturing process.
Diamond saw blade is a cutting tool, due to its special cutting object, the diamond blade manufacturing process made certain requirements, not only required to maintain the original strength and hardness of diamond, but also requires cutting teeth and the substrate between the stronger binding strength, in order to ensure the life of the diamond saw blade and cutting efficiency. Currently manufacturing diamond saw blade used in two ways, first: with hot press diamond crimp directly formed on the substrate; two are: first, the diamond particles made of hot-pressing method impregnated sheet (ie cutting teeth), and, using high-frequency welding method, the welding set diamond impregnated sheet on the substrate, to form the cutting teeth. However, the two methods used in the pressing means, to be subjected to the diamond high temperature of about 1000 ℃, in such a high temperature, diamond and graphite prone to thermal cracking, thereby reducing the strength of the diamond and the original hardness. High frequency welding, bonding strength is not high, thus making the cutting life is short, the efficiency is low.
The object of the present invention is to provide a can maintain the original strength and hardness of diamond, diamond-impregnated sheet and the substrate bonding strength between the diamond blade manufacturing process.
The object of the present invention is achieved, at room temperature (20 ~ 30 ℃), the use of plating methods, nickel sulfate (иiSO4 · 7H2O), cobalt sulfate (COSO4 · 7H2O), boric acid (H3BO3), sodium (иaCl) the preparation of the plating solution, nickel-cobalt alloy plating layer wrap diamond particles, made of impregnated sheet stack, the same plating method, in which the plating solution, using an atomic force between the keys, The electroplated diamond impregnated sheet inserts welded firmly to the substrate. Cobalt atoms in the plating solution is added, the coating atomic structure of the lattice distortion, so that the coating hardness.
Diamond saw blade manufactured by this method, temperature is greatly reduced due to manufacturing, to avoid damage due to the heat of the diamond, to improve the bond strength, thus greatly improving the quality of the diamond saw, and hot pressing, hot pressing and high-frequency welding Compared with this method to improve the service life of the saw blade manufactured from 0.2 to 0.25 times, faster cutting speed 0.25 ~ 0.33 times. The same time as plating, diamond can be automatically directed, is about the most difficult in itself naturally toward the cutting edge hard object to be cut, so full of diamond cutting results. For these reasons, the use of this method to make low-grade diamond, have been developed using, thus reducing production costs. In addition, the present invention also has the advantages of simple process, short production cycle advantages.
For the reproduction of the present invention is more clearly described in Diamond saw blade manufacturing process, the present invention below with reference to the drawings and the detailed operation process of the program for further instructions.
Figure 1 is a circular diamond saw blade circular perforations sectional view of the base body.
Figure 2 is a partially enlarged plan 1A to FIG.
Figure 3 is a circuit diagram plating.
Figure 4 is made of a circular diamond saw blade tooth circular cross section.
Figure 5 is a partial plan view of Figure 4B the enlarged view.
(A) plating solution formulation and preparation (matrix hardness of HRC30 or so nickel-cobalt alloy).
Nickel sulfate 280 to 300 g / l cobalt sulfate, 15 ~ 25 g / l boric acid 38 g / l NaCl 18 g / l or more drugs than the purity of chemical pure, distilled water were heated and dissolved, followed by mixing, filtering, adjusting the acidity set aside.
(Two) saw the matrix and impregnated sheet size and shape of the blade manufacturing needs according to user requirements.
If φ400 × 7 × φ50 wide groove concrete pavement round scalloped cutting blade. Adopt 65Mn steel substrate. Heat processed into the shape of Figure 1. With a file, emery cloth wipe burr sharp corners.
Impregnated film can be made into various shapes. Making specific method is: according to the thickness of the impregnated sheet, choose the appropriate thickness of the plastic sheet, plastic sheet extrusion in numerous films with the same shape Impregnated hole. The plastic plate close to the stainless steel plate or iron, insulated stainless steel plate through hole leakage outside the part, connected to wires, washed away into the plating bath can. Plating specification and operation see (four), (five).
(Three) and pre-plated inlay.
The impregnated sheet to fit the form of the transition matrix embedded in the blade. Impregnated according to need and the substrate with the film can be thick, smooth phase, but also allows impregnated sheet slightly prominent on both sides of the substrate away.
Set a good lead solder on the substrate, a scrub with acetone, and then acid insulation coatings or celluloid insulation does not plated parts. Insulation after dry etching rust acid, hydrochloric acid concentration of about 30%, for 30 seconds at room temperature, soaked in warm water to prepare electrochemical degreasing. Degreasing solution composition: Sodium hydroxide (иaOH) 17 g / l, sodium carbonate (иa2CO3) 38 g / l, trisodium phosphate (иapO4 · 12H2O) 15 g / l, sodium silicate (иa2SiO3 · 9H2O) 9 g / l, the process specification: temperature 30 ℃, current density of 10 A / dm 2, the first cathodic degreasing in 2.5 minutes after the anode oil for 1 minute, another extremely nickel plate. After processing, with warm water, ready to anodizing. Anodizing solution of 40% (by volume) of sulfuric acid for 1 minute, the current density of 35 A / dm 2, the anode lead plate. Anodized, rinse with warm water as soon as possible, access to the circuit in Figure 2, charged into the plating tank.
(Four) plating specifications Temperature: 20 ℃ -30 ℃, current density: 1 A / dm 2, Acidity: pH4-4.5.
(E) the substrate plating operation into the groove after the first 3 A / dm 2 at a current density shock for 2 minutes, and then plating the normal specification air for 1 hour, air plating is completed, a skin head straight suction pipette the diamond particles spreading the periphery of the base ring belt tooth blade. After Caesar diamond; periodically flip unloading sand (diamond powder), so that the surface is uniformly coated diamond particles glue layer. Caesar unloading diamond sanding time, and the time interval between two adjacent, users can request the diamond concentration to determine. And two unloading sand sanding time delay time can be shortened, could increase the concentration of diamond, generally the former is ten minutes, which is 24 hours, so the time to allow the diamond concentration of 75%.
Saw tooth thickness to meet the requirements, you can the slot. Rinse out the tank with warm water blade, remove the insulation, can be carried out dehydrogenase, handling methods: oven 160 ℃ heat for three hours. Dehydrogenase is completed, go shovel nodulation Serve products.
