Device and method for surface passivation of metal castings
A technology of metal casting and passivation agent, applied in the direction of metal material coating process, can solve the problems of consumption of passivation agent, different thicknesses, high cost, and achieve the effect of ensuring product quality, avoiding direct contact and improving service life
Active Publication Date: 2019-06-25
TS INVESTMENT CASTING
View PDF7 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] 1. Since the passivation reaction will consume the active ingredients in the passivation agent, the thickness of the surface passivation of metal castings put into the reaction pool in different batches before and after will be different, which will affect the product quality
[0004] 2. Since the passivation reaction uses an excessive amount of passivating agent in the reaction pool, these passivating agents will produce a large number of low-concentration passivating agent residues after the passivating reaction is completed. If they are processed or recycled, then The cost is high; if it is discharged directly, it will seriously pollute the environment
[0005] 3. Due to the high oxidation and corrosiveness of the passivating agent, the liquid level switch used to detect the liquid level of the passivating agent is easily damaged after long-term contact with the passivating agent, resulting in high maintenance costs
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0035] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0036] see figure 1 , figure 2 and image 3 , a metal casting surface passivation device according to the present invention, comprising a metal casting passivation component and a passivating agent recovery component;
[0037] The metal casting passivation assembly includes a reaction pool 1, and a station tank 2 is fixedly installed in the reaction pool 1. The station tank 2 includes a base plate 3 for placing metal castings. There is a limit baffle 4 extending upwards, and a pressure sensor 5 for detecting whether the metal casting is placed in place and a first concentration sensor 6 for detecting the concentration of the passivating agent are arranged at the bottom of the substrate 3;
[0038] The reaction pool 1 is connected with a first ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a metal casting surface passivation device and method. The device comprises a metal casting passivation assembly and a passivant recycling assembly; the metal casting passivation assembly comprises a reaction tank used for a passivation reaction, an outlet of the reaction tank is connected with a buffer tank of the passivant recycling assembly, the buffer tank filters out impurities included in the low-concentration passivant and is connected with a recycling tank, the recycling tank is connected with a second storage bucket storing a high-concentration passivant, and the second storage bucket is used for neutralizing the low-concentration passivant into a high-concentration using passivant which is stored in a first storage bucket so as to be used for the reaction tank. The buffer tank and the recycling tank are arranged and are used for treating the low-concentration passivant discharged by the reaction tank, the passivant agent is recovered to the concentration capable of being used by the passivation reaction, the cost is reduced, and environment pollution caused by direct discharging is avoided.
Description
technical field [0001] The invention relates to the field of metal casting production devices, in particular to a metal casting surface passivation device and method. Background technique [0002] Passivation is a method to transform the metal surface into a state that is not easily oxidized, and to delay the corrosion rate of the metal. What the existing passivation method adopts is to throw metal castings in the reaction pool that is filled with passivation agent, the defect of this passivation method is: [0003] 1. Since the passivation reaction will consume the active ingredients in the passivating agent, the thickness of the surface passivation of metal castings put into the reaction pool in different batches before and after will be different, which will affect the product quality. [0004] 2. Since the passivation reaction uses an excessive amount of passivating agent in the reaction pool, these passivating agents will produce a large number of low-concentration pas...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/00C23C22/77
CPCC23C22/00C23C22/77
Inventor 王震球
Owner TS INVESTMENT CASTING