CN112454013B - Auxiliary metal processing technology for CuCr contact surface treatment processing - Google Patents
Auxiliary metal processing technology for CuCr contact surface treatment processing Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/003—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor whereby the workpieces are mounted on a holder and are immersed in the abrasive material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/10—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work
- B24B31/102—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work using an alternating magnetic field
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
- B24B31/14—Abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09G—POLISHING COMPOSITIONS; SKI WAXES
- C09G1/00—Polishing compositions
- C09G1/02—Polishing compositions containing abrasives or grinding agents
Abstract
The invention discloses an auxiliary metal processing technology for CuCr contact surface treatment processing, which comprises magnetic grinding, abrasive material proportioning, CuCr contact basket loading, grinding and vacuum degreasing processing; no. 10 industrial white oil is adopted as a grinding cooling wetting medium, and
the mixed abrasive of the stainless steel needle is used as a grinding and polishing abrasive, the CuCr contact is subjected to magnetic grinding and polishing, and the technical requirements of no scratch, oxidation, stain and other defects on the surface of the CuCr contact are met through vacuum degreasing, vacuum drying and vacuum packaging. The method has low consumption, environmental protection and high efficiency, effectively avoids the oxidation risk in the polishing link, and the CuCr contact produced by the method has excellent appearance quality, the surface appearance of the product is in inherent metal luster, and the CuCr contact has high appearance consistency.
Description
Technical Field
The invention relates to the technical field of metal surface processing, in particular to an auxiliary metal processing technology for CuCr contact surface processing.
Background
One of the technical requirements of the delivered-state appearance of the CuCr contact for the vacuum arc-extinguishing chamber is ' no surface defects such as scratches, oxidation and stains ', and the like ', and the CuCr contact is required to have good appearance quality. The functional characteristics of the vacuum interrupter are affected by the presence of defects such as oxidation, scratches, etc. on the surface of the contact material, and therefore these defects are not allowed. In the contact processing and manufacturing process, due to the fact that the process is long, the number of working procedure links is large, products are frequently grabbed and moved in a rotating mode, the total duration time of the working procedures is long, surface appearance defects such as scratches, oxidation and the like in different degrees are inevitably generated on the finally machined surface, and the appearance of the batch products is difficult to achieve high consistency. The CuCr contact material has the characteristic of easy oxidation, surface oxidation of different degrees is inevitable in the manufacturing process, and oxidation prevention measures such as surface passivation cannot be adopted due to the use requirement of the vacuum working condition, so that the CuCr contact material becomes a difficult point in an industrial chain.
In the manufacturing industry chain of the vacuum arc-extinguishing chamber, in order to reduce the cost, an arc-extinguishing chamber manufacturer hopes that the CuCr contact material can be directly used during the assembly of the vacuum arc-extinguishing chamber without cleaning treatment such as surface pickling, and the like, and requires that the surface of the CuCr contact is clean, free of appearance defects such as oxidation, stains and the like, and has consistent appearance. Therefore, contact manufacturers generally add a dry polishing process to the post-process to solve the problems of scratch, oxidation and other appearance defects. The appearance quality of the dry polishing product is obviously successful, but the dry polishing also has some defects. The polishing material adopted by the dry polishing belongs to disposable consumables, the consumption is high, and black dust generated in the polishing process can be embedded into the cutting texture on the surface of a product to cause secondary pollution and pollution to the field environment. The surface of the product was wiped with a dust-free cloth, and a small amount of black powder residue was clearly visible. Ultrasonic cleaning with alkaline solutions or solvent-based solution ultrasonic/vacuum gas phase cleaning cannot remove these black contaminants. Dry polishing does not completely circumvent the risk of cleaning.
In addition, water or water-based media are mostly used for cooling and wetting in general wet polishing, so that the risk of product oxidation is greatly increased, the subsequent cleaning cannot ensure the surface cleaning of the product, water stains are always present, and a small amount of residual powder remains after the product polished by the ceramic abrasive is improperly cleaned. According to statistical data, the contact manufacturer who produces 800 million PCS in one year accounts for up to 10% of the repair quantity of products caused by appearance problems such as oxidation and the like in the manufacturing link every year, and the repair cost is high.
Under the current appearance quality situation of the current delivery state of CuCr contact materials, a vacuum arc extinguish chamber manufacturer generally cleans the contact materials before tube loading, and when the product is oxidized, the product can be washed by acid to remove oxidation, so that the cleanness and the non-pollution of the surface of the product before tube loading are ensured, and the electrical characteristics of the vacuum arc extinguish chamber are further ensured.
The surface has no oxidation, no scratch, no stain and the like, and the hard appearance index is gradually used for measuring the delivery qualification judgment of the CuCr contact product. Therefore, the efficient, low-cost and environment-friendly CuCr contact material surface treatment method is very key for reducing the cost and improving the product quality of vacuum arc-extinguishing chamber manufacturers, and is very significant for improving the appearance quality, reducing the cost and the like of contact material products of contact material manufacturers.
Disclosure of Invention
In order to solve the technical problem, the invention provides an auxiliary metal processing technology for CuCr contact surface treatment processing.
The technical scheme of the invention is as follows: an auxiliary metal processing technology for CuCr contact surface treatment processing comprises the following steps:
step 1, magnetic grinding: placing the CuCr contact into magnetic grinding equipment, adding a grinding cooling wetting medium into the magnetic grinding equipment, submerging all the CuCr contacts by the grinding cooling wetting medium, and controlling the total adding amount of the grinding cooling wetting medium to be 10-50L;
step 2, grinding material proportioning: adding grinding and polishing abrasive to a magnetic grinding device to obtain the Cr content in the CuCr alloy50% as reference, using
The stainless steel needle is mixed according to the mass ratio of 3:1.5:1.5 to be used as grinding and polishing abrasive, the content of Cr in the CuCr alloy is increased by 10 percent each time, and the grinding and polishing abrasive contains Cr
The proportion of the stainless steel needle is increased by 1, the Cr content in the CuCr alloy is reduced by 10 percent every time, and the stainless steel needle is ground and polished in the grinding material
The proportion of the stainless steel needle is increased by 1, the total weight of the grinding and polishing abrasives is controlled within the range of 1-6kg, the weight proportion of the specification of the abrasives can be properly adjusted according to the Cr content, more abrasives with large diameters can be selected for grinding products with high Cr content, and more abrasives with small diameters can be selected for grinding products with low Cr content; the selection and the proportion of the grinding materials are also the key points for obtaining good surface structure quality;
step 3, basket loading of CuCr contacts: sequentially stacking CuCr contact materials which are deburred and qualified in size inspection in a stainless steel basket, wherein the basket is mainly used for preventing collision damage caused by free movement of products, screening abrasive materials, integrally placing the stainless steel basket in a grinding groove, the upper layer of the stainless steel basket is composed of stainless steel wires which are crossed horizontally and vertically, CuCr contacts are laterally inserted into lattices formed by the stainless steel wires, the lower layer of the stainless steel basket adopts two adjacent stainless steel wires as a group to serve as a bottom support of the CuCr contacts, and the maximum product capacity of the grinding groove is 20-40 kg; the basket has certain universality, and can treat products with certain diameter size range and thickness range;
and 4, grinding: starting magnetic grinding equipment, and controlling the grinding time to be 5-15min, wherein the rotating direction of a magnetic field for magnetic grinding, the forward time and the reverse time are halved, the grinding time can be properly adjusted according to the Cr content, the grinding time for grinding products with high Cr content can be slightly longer, and the grinding time for grinding products with low Cr content can be slightly shorter; the length of the grinding time is also a key factor influencing the grinding and polishing effects;
and 5, performing vacuum degreasing treatment.
Further, the magnetic grinding device in the step 1 adopts NF-9808 high-precision magnetic grinding device, the volume of the grinding groove is 175L, wherein the grinding cooling wetting medium adopts No. 10 industrial white oil, and the selection of No. 10 industrial white oil as the grinding liquid is critical, firstly, the cooling liquid used for processing and cooling is No. 10 industrial white oil, and can be removed by using the same degreasing treatment process, and secondly, the selection of No. 10 industrial white oil as the grinding cooling wetting medium is critical for avoiding the oxidation of the product.
Further, in the step 1, while the grinding cooling wetting medium is added, the antirust liquid is added, and the antirust liquid can effectively reduce the oxidation of the metal surface.
Further, the antirust liquid comprises the following components in parts by weight: 10-15 parts of naphthenic base oil, 3-7 parts of diethanolamine borate, 8-10 parts of polyethylene glycol, 11-13 parts of acetyl triethyl citrate, 5-9 parts of lanthanum phytate, 2-3 parts of zinc molybdate, 7-9 parts of sorbitol citrate, 1-2 parts of a defoaming agent, 0.4-0.6 part of a surfactant, 5-7 parts of an emulsifier, 0.6-1 part of simethicone and 30-50 parts of water, wherein the antirust liquid can form a protective film on the metal surface in the grinding and polishing process.
Further, in the step 2, while adding the grinding and polishing abrasive, quartz sand and polishing powder are added into the magnetic grinding device, wherein the size of the quartz sand is 4-8mm, 0.5kg of quartz sand and 0.2kg of polishing powder are added into each kg of product, and the quartz sand and the polishing powder are used as auxiliary abrasive, so that the grinding and polishing time can be shortened.
Further, in the vacuum degreasing treatment in the step 5, a horizontal vacuum degreasing sintering furnace is adopted for degreasing treatment, the furnace is vacuumized during sintering, helium is filled into the vacuum sintering furnace when the vacuum degree reaches 1-3Pa, the air pressure in the vacuum sintering furnace reaches 10-20Pa, the sintering time is 2-3min, then the impurities on the surface of the product fall off by adopting ultrasonic treatment, the heat conductivity of the helium is high, and the sintering process plays roles in protecting gas and conducting heat.
Further, the product after vacuum degreasing treatment is cleaned by an ultrasonic cleaning machine, the cleaning liquid is 98 # gasoline, the cleaning environment is sealed, the ultrasonic cleaning frequency is 80-90KHz, 98 # gasoline is volatile, and the cleaning effect is strong.
Furthermore, after the product subjected to ultrasonic cleaning is dried in a dryer, a packaging machine is adopted for vacuum packaging, the packaged product is packaged again, and the metal contact is sealed and isolated from air contact, so that oxidation can be reduced.
As an improvement, the product after the step 4 is demagnetized and then subjected to the vacuum degreasing treatment in the step 5, after the product is ground by magnetic grinding equipment, the contact is easy to be magnetized, the product performance is influenced, and the contact performance is prevented from being influenced by the magnetic force due to demagnetization of the demagnetizing machine.
The invention has the beneficial effects that:
(1) the invention adopts No. 10 industrial white oil as a grinding cooling wetting medium and adopts
The mixed abrasive of the stainless steel needle is used as a grinding and polishing abrasive, the CuCr contact is subjected to magnetic grinding and polishing, and the technical requirements of no scratch, oxidation, stain and other defects on the surface of the CuCr contact are met through vacuum degreasing, vacuum drying and vacuum packaging; the process disclosed by the invention is low in consumption, environment-friendly and efficient, and effectively avoids the oxidation risk in the polishing link.
(2) The CuCr contact produced by the process has excellent appearance quality, the surface appearance of the product has inherent metallic luster, the product has high appearance consistency, the surface structure quality is improved to a certain extent, and the edge transition is smoother; the CuCr contact produced by the process can be directly used for pipe installation without other pre-assembly treatment after delivery.
Drawings
FIG. 1 is a schematic view of the appearance of a CuCr contact according to the present invention.
Figure 2 is a top view of the basket structure of the present invention.
Detailed Description
Example 1:
an auxiliary metal processing technology for CuCr contact surface treatment processing comprises the following steps:
step 1, magnetic grinding: placing CuCr contacts into magnetic grinding equipment, adding grinding cooling wetting media into the magnetic grinding equipment, wherein the grinding cooling wetting media submerge all the CuCr contacts, controlling the total adding amount range of the grinding cooling wetting media to be 50L, adopting NF-9808 high-precision magnetic grinding equipment by the magnetic grinding equipment, and grinding the volume of a grinding groove to be 175L, wherein the grinding cooling wetting media adopt No. 10 industrial white oil, adding antirust liquid while adding the grinding cooling wetting media, and the antirust liquid can effectively reduce the oxidation of the metal surface and consists of the following components in parts by weight: 15 parts of naphthenic base oil, 7 parts of diethanolamine borate, 10 parts of polyethylene glycol, 13 parts of acetyl triethyl citrate, 9 parts of lanthanum phytate, 3 parts of zinc molybdate, 9 parts of sorbitol citrate, 2 parts of defoaming agent, 0.6 part of surfactant, 7 parts of emulsifier, 1 part of simethicone and 50 parts of water, wherein a protective film is formed on the surface of metal in the grinding and polishing process of antirust liquid;
step 2, grinding material proportioning: adding grinding and polishing abrasive to magnetic grinding equipment, taking the Cr content in CuCr alloy as the reference and adopting
The stainless steel needle is mixed with abrasive according to the mass ratio of 3:1.5:1.5 to be used as grinding and polishing abrasive, the content of Cr in the CuCr alloy is increased by 10 percent each time, and the grinding and polishing abrasive contains Cr
The proportion of the stainless steel needle is increased by 1, the Cr content in the CuCr alloy is reduced by 10 percent every time, and the stainless steel needle is ground and polished in the grinding material
The proportion of the stainless steel needle is increased by 1, and the total weight of the grinding and polishing abrasive is 2 kg; the selection and the proportion of the grinding materials are also obtained tablesThe key of the surface structure quality is that when grinding and polishing abrasive materials are added, quartz sand and polishing powder are added into magnetic grinding equipment, the size of the quartz sand is 8mm, 0.5kg of quartz sand and 0.2kg of polishing powder are added into each kg of product, and the quartz sand and the polishing powder are used as auxiliary abrasive materials, so that the grinding and polishing time can be shortened;
step 3, basket loading of CuCr contacts: sequentially stacking CuCr contact materials which are deburred and qualified in size inspection in a stainless steel basket, wherein the basket is mainly used for preventing collision damage caused by free movement of products, screening abrasive materials, integrally placing the stainless steel basket in a grinding groove, the upper layer of the stainless steel basket is composed of stainless steel wires which are crossed horizontally and vertically, CuCr contacts are laterally inserted into lattices formed by the stainless steel wires, the lower layer of the stainless steel basket adopts two adjacent stainless steel wires as a group to serve as a bottom support of the CuCr contacts, and the maximum product capacity of the grinding groove is 40 kg; the basket has certain universality, and can treat products with certain diameter size range and thickness range;
and 4, grinding: starting magnetic grinding equipment, controlling the grinding time to be 15min, wherein the rotating direction of a magnetic field of magnetic grinding, the forward direction and the reverse direction are half-and-half in duration, after grinding by the magnetic grinding equipment, demagnetizing the product, easily magnetizing the product by a contact of the magnetic grinding equipment to influence the product performance, and demagnetizing by a demagnetizing machine to avoid the influence of the magnetic force on the contact performance;
step 5, vacuum degreasing treatment, wherein a horizontal vacuum degreasing sintering furnace is adopted for degreasing treatment in the vacuum degreasing treatment, the furnace is vacuumized during sintering, helium is filled into the vacuum sintering furnace when the vacuum degree reaches 3Pa, the air pressure in the vacuum sintering furnace reaches 20Pa, the sintering time is 3min, ultrasonic waves are adopted to enable impurities on the surface of a product to fall off, the helium heat conductivity is high, the sintering process has the functions of protecting gas and heat conduction, the product after the vacuum degreasing treatment is cleaned, an ultrasonic cleaning machine is adopted for cleaning, 98 # gasoline is adopted as cleaning liquid, the cleaning environment is sealed, the ultrasonic cleaning frequency is 90KHz, 98 # gasoline is volatile, the cleaning effect is strong, the product after the ultrasonic cleaning is dried in a drying machine, then an encapsulation machine is adopted for vacuum encapsulation, and the encapsulated product is packed into boxes, the metal contact is hermetically isolated from air contact, and oxidation is reduced.
Example 2:
an auxiliary metal processing technology for CuCr contact surface treatment processing comprises the following steps:
step 1, magnetic grinding: placing CuCr contacts into magnetic grinding equipment, adding grinding cooling wetting media into the magnetic grinding equipment, wherein the grinding cooling wetting media submerge all the CuCr contacts, controlling the total adding amount of the grinding cooling wetting media to be 45L, adopting NF-9808 high-precision magnetic grinding equipment in the step 1, and grinding the volume of a grinding groove to be 175L, wherein the grinding cooling wetting media adopt No. 10 industrial white oil, adding antirust liquid while adding the grinding cooling wetting media, and adding the antirust liquid can effectively reduce the oxidation of the metal surface, wherein the antirust liquid comprises the following components in parts by weight: 10 parts of naphthenic base oil, 3 parts of diethanolamine borate, 8 parts of polyethylene glycol, 11 parts of acetyl triethyl citrate, 5 parts of lanthanum phytate, 2 parts of zinc molybdate, 7 parts of sorbitol citrate, 1 part of defoaming agent, 0.4 part of surfactant, 5 parts of emulsifier, 0.6 part of simethicone and 30 parts of water, wherein a protective film is formed on the metal surface by the antirust liquid in the grinding and polishing process;
step 2, grinding material proportioning: adding grinding and polishing abrasive to magnetic grinding equipment, taking the Cr content in CuCr alloy as the reference and adopting
The stainless steel needle is mixed with abrasive according to the mass ratio of 3:1.5:1.5 to be used as grinding and polishing abrasive, the content of Cr in the CuCr alloy is increased by 10 percent each time, and the grinding and polishing abrasive contains Cr
The proportion of the stainless steel needle is increased by 1, the Cr content in the CuCr alloy is reduced by 10 percent every time, and the stainless steel needle is ground and polished in the grinding material
The proportion of the stainless steel needle is increased by 1, and the total weight of the grinding and polishing abrasive materialThe amount was 3 kg; the selection and the proportion of the grinding materials are also the key for obtaining good surface structure quality, quartz sand and polishing powder are added into magnetic grinding equipment while grinding and polishing the grinding materials, the size of the quartz sand is 4mm, 0.5kg of quartz sand and 0.2kg of polishing powder are added into each kg of product, and the quartz sand and the polishing powder are used as auxiliary grinding materials, so that the grinding and polishing time can be shortened;
step 3, basket loading of CuCr contacts: sequentially stacking CuCr contact materials which are deburred and qualified in size inspection in a stainless steel basket, wherein the basket is mainly used for preventing collision damage caused by free movement of products, screening abrasive materials, and then integrally placing the basket in a grinding groove, and the maximum product capacity of the grinding groove is 20 kg; the basket has certain universality, and can treat products with certain diameter size range and thickness range;
and 4, grinding: starting magnetic grinding equipment, controlling the grinding time to be 5min, wherein the rotation direction of a magnetic field of magnetic grinding, the forward direction and the reverse direction are always half and half, after the magnetic grinding equipment is used for grinding, demagnetizing the product, easily magnetizing the product through a contact of the magnetic grinding equipment to influence the product performance, and demagnetizing through a demagnetizing machine to avoid the influence of the magnetic force on the contact performance;
step 5, vacuum degreasing treatment, wherein a horizontal vacuum degreasing sintering furnace is adopted for degreasing treatment in the vacuum degreasing treatment, the furnace is vacuumized during sintering, helium is filled into the vacuum sintering furnace when the vacuum degree reaches 1Pa, the air pressure in the vacuum sintering furnace reaches 10Pa, the sintering time is 2min, ultrasonic waves are adopted to enable impurities on the surface of a product to fall off, the helium heat conductivity is high, the sintering process has the functions of protecting gas and heat conduction, the product after the vacuum degreasing treatment is cleaned, an ultrasonic cleaning machine is adopted for cleaning, 98 gasoline is adopted as cleaning liquid, the cleaning environment is sealed, the ultrasonic cleaning frequency is 80KHz, 98 gasoline is volatile, the cleaning effect is strong, the product after the ultrasonic cleaning is dried in a drying machine, then a packaging machine is adopted for vacuum packaging, and the packaged product is packed into boxes, the metal contact is hermetically isolated from air contact, and oxidation is reduced.
Example 3:
an auxiliary metal processing technology for CuCr contact surface treatment processing comprises the following steps:
step 1, magnetic grinding: placing CuCr contacts into magnetic grinding equipment, adding grinding cooling wetting media into the magnetic grinding equipment, wherein the grinding cooling wetting media submerge all the CuCr contacts, controlling the total adding amount range of the grinding cooling wetting media to be 48L, adopting NF-9808 high-precision magnetic grinding equipment by the magnetic grinding equipment, and grinding the volume of a grinding groove to be 175L, wherein the grinding cooling wetting media adopt No. 10 industrial white oil, adding antirust liquid while adding the grinding cooling wetting media, and the antirust liquid can effectively reduce the oxidation of the metal surface and consists of the following components in parts by weight: 15 parts of naphthenic base oil, 6 parts of diethanolamine borate ester, 9 parts of polyethylene glycol, 12 parts of acetyl triethyl citrate, 8 parts of lanthanum phytate, 2.5 parts of zinc molybdate, 8 parts of sorbitol citrate, 1.5 parts of defoaming agent, 0.5 part of surfactant, 6 parts of emulsifier, 0.8 part of simethicone and 40 parts of water, wherein a protective film is formed on the metal surface in the grinding and polishing process of the antirust liquid;
step 2, grinding material proportioning: adding grinding and polishing abrasive to magnetic grinding equipment, taking the Cr content in CuCr alloy as the reference and adopting
The stainless steel needle is mixed with abrasive according to the mass ratio of 3:1.5:1.5 to be used as grinding and polishing abrasive, the content of Cr in the CuCr alloy is increased by 10 percent each time, and the grinding and polishing abrasive contains Cr
The proportion of the stainless steel needle is increased by 1, the Cr content in the CuCr alloy is reduced by 10 percent every time, and the stainless steel needle is ground and polished in the grinding material
The proportion of the stainless steel needle is increased by 1, and the total weight of the grinding and polishing abrasive is 6 kg; the selection and the proportion of the grinding materials are also the key for obtaining good surface structure quality, and when the grinding and polishing grinding materials are added, quartz sand and polishing powder are added into the magnetic grinding equipmentThe size of the quartz sand is 5mm, 0.5kg of quartz sand and 0.2kg of polishing powder are added into each kg of product, and the quartz sand and the polishing powder are used as auxiliary abrasive materials, so that the grinding and polishing time can be shortened;
step 3, basket loading of CuCr contacts: sequentially stacking CuCr contact materials which are deburred and qualified in size inspection in a stainless steel basket, wherein the basket is mainly used for preventing collision damage caused by free movement of products, screening grinding materials, and then integrally placing the basket in a grinding groove, and the maximum product capacity of the grinding groove is 30 kg; the basket has certain universality, and can treat products with certain diameter size range and thickness range;
and 4, grinding: starting magnetic grinding equipment, controlling the grinding time to be 10min, wherein the rotation direction of a magnetic field of magnetic grinding, the forward direction and the reverse direction are always half and half, after the magnetic grinding equipment is used for grinding, demagnetizing the product, easily magnetizing the product through a contact of the magnetic grinding equipment to influence the product performance, and demagnetizing through a demagnetizing machine to avoid the influence of the magnetic force on the contact performance;
step 5, vacuum degreasing treatment, wherein a horizontal vacuum degreasing sintering furnace is adopted for degreasing treatment in the vacuum degreasing treatment, the furnace is vacuumized during sintering, helium is filled into the vacuum sintering furnace when the vacuum degree reaches 2Pa, the air pressure in the vacuum sintering furnace reaches 15Pa, the sintering time is 2.5min, then ultrasonic waves are adopted to enable impurities on the surface of a product to fall off, the helium heat conductivity is high, the sintering process has the functions of protective gas and heat conduction, the product after the vacuum degreasing treatment is cleaned, an ultrasonic cleaning machine is adopted for cleaning, 98 # gasoline is adopted as a cleaning liquid, the cleaning environment is sealed, the ultrasonic cleaning frequency is 85KHz, 98 # gasoline is volatile, the cleaning effect is strong, the product after the ultrasonic cleaning is dried in a drying machine and then is packaged in a vacuum manner by a packaging machine, and the packaged product is packed into boxes again, the metal contact is hermetically isolated from air contact, and oxidation is reduced.
Examples of the experiments
1. By using the auxiliary metal processing technology for the surface treatment processing of the CuCr contact disclosed in the embodiments 1-3, the CuCr contact processed by the auxiliary metal processing technology is subjected to a relevant performance parameter experiment, and the test method is as follows:
performing a CuCr contact conductivity test on a conductivity meter according to the standard of GB/T3651-1983 measuring method of metal high-temperature thermal conductivity coefficient;
according to GB/T231.1-2002 section 1 of the Metal Brinell hardness test: the test method uses a hardness meter to detect the surface hardness of the CuCr contact according to the standard;
detecting the surface roughness of the CuCr contact according to the standard of GB/T1031-2009 surface structure profile method surface roughness parameters and values thereof;
the product density was measured according to GB/T1423 and 1996 test methods for the density of noble metals and alloys thereof, with reference to foreign standards.
The test results are shown in table 1:
TABLE 1 copper alloy compositions and Property measurements of examples 1-3
As can be seen from the data in Table 1, the contact of examples 1-3 has the same metal composition, the density and conductivity of the contact do not change much, the surface hardness of the contact is slightly affected by the vacuum sintering time, the optimal sintering time is 2min, but according to the actual production, the contact of examples 1-3 can effectively remove the surface grease by using 2.5min as the best in the degreasing treatment, and the roughness of examples 1-3 is 0.6 at the minimum, namely the minimum roughness, so that the contact of example 3 is the best scheme in the actual production.
Claims (5)
1. An auxiliary metal processing technology for CuCr contact surface treatment processing is characterized by comprising the following steps:
step 1, magnetic grinding: placing the CuCr contact into magnetic grinding equipment, adding a grinding cooling wetting medium into the magnetic grinding equipment, submerging all the CuCr contacts by the grinding cooling wetting medium, and controlling the total adding amount of the grinding cooling wetting medium to be 10-50L; the magnetic grinding equipment adopts NF-9808 high-precision magnetic grinding equipment, the volume of a grinding groove is 175L, and a grinding cooling wetting medium adopts No. 10 industrial white oil;
step 2, grinding material proportioning: adding grinding and polishing abrasive to magnetic grinding equipment, taking the Cr content in CuCr alloy as the reference and adopting
The stainless steel needle is mixed according to the mass ratio of 3:1.5:1.5 to be used as grinding and polishing abrasive, the content of Cr in the CuCr alloy is increased by 10 percent each time, and the grinding and polishing abrasive contains Cr
The proportion of the stainless steel needle is increased by 1, the Cr content in the CuCr alloy is reduced by 10 percent every time, and the stainless steel needle is ground and polished in the grinding material
The proportion of the stainless steel needle is increased by 1, and the total weight of the grinding and polishing abrasive is controlled within the range of 1-6 kg;
step 3, basket loading of CuCr contacts: sequentially stacking the CuCr contact materials which are deburred and qualified in size inspection on a stainless steel basket, and then integrally putting the stainless steel basket into a grinding groove, wherein the product capacity of the grinding groove is 20-40 kg;
and 4, grinding: starting magnetic grinding equipment, and controlling the grinding time to be 5-15min, wherein the rotating direction of a magnetic field of magnetic grinding, and the forward and reverse durations are halved;
step 5, vacuum degreasing treatment;
in the step 1, 0.1L of antirust liquid is added while grinding and cooling wetting media are added;
the antirust liquid comprises the following components in parts by weight: 10-15 parts of naphthenic base oil, 3-7 parts of diethanolamine borate, 8-10 parts of polyethylene glycol, 11-13 parts of acetyl triethyl citrate, 5-9 parts of lanthanum phytate, 2-3 parts of zinc molybdate, 7-9 parts of sorbitol citrate, 1-2 parts of a defoaming agent, 0.4-0.6 part of a surfactant, 5-7 parts of an emulsifier, 0.6-1 part of simethicone and 30-50 parts of water.
2. The process for processing the auxiliary metal for the surface treatment processing of the CuCr contact as claimed in claim 1, wherein in the step 2, quartz sand and polishing powder are added into a magnetic grinding device while grinding and polishing abrasive materials are added, the size of the quartz sand is 4-8mm, and 0.5kg of the quartz sand and 0.2kg of the polishing powder are added into each kg of the product.
3. The process for processing the auxiliary metal for the surface treatment and processing of the CuCr contact according to claim 1, wherein the vacuum degreasing processing in the step 5 is performed by using a horizontal vacuum degreasing sintering furnace, wherein the furnace is vacuumized during sintering, helium is filled into the vacuum sintering furnace when the vacuum degree reaches 1-3Pa, the air pressure in the vacuum sintering furnace reaches 10-20Pa, the sintering time is 2-3min, and then ultrasonic processing is performed to remove impurities on the surface of the product.
4. The process for processing the auxiliary metal for processing the surface of the CuCr contact as claimed in claim 1, wherein the product after vacuum degreasing is cleaned by an ultrasonic cleaning machine, the cleaning liquid is 98 # gasoline, the cleaning environment is sealed, and the ultrasonic cleaning frequency is 80-90 KHz.
5. The auxiliary metal processing technology for CuCr contact surface treatment processing as claimed in claim 4, wherein the product cleaned by ultrasonic wave is dried in a dryer, then vacuum packaging is carried out by using a packaging machine, and then the packaged product is boxed.
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Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2009850C1 (en) * | 1991-10-17 | 1994-03-30 | Раид Минулович Халимулин | Vibration machine |
| CN101608310A (en) * | 2008-06-16 | 2009-12-23 | 南京科润工业介质有限公司 | Long-acting emulsion-type antirust fluid |
| CN102909642A (en) * | 2012-09-26 | 2013-02-06 | 成都四威高科技产业园有限公司 | Magnetic grinding aid |
| CN103710086A (en) * | 2013-11-19 | 2014-04-09 | 广西大学 | Aluminium-lithium alloy plate strip cold rolling lubricant |
| CN204248629U (en) * | 2014-07-24 | 2015-04-08 | 凤城市大方增压器有限公司 | A kind of workpiece cleaner |
| CN105058218A (en) * | 2015-08-12 | 2015-11-18 | 合肥鑫艺达抛光机械有限公司 | Operation technological process of magnetic polishers |
| CN205097012U (en) * | 2015-09-28 | 2016-03-23 | 天津鸿鑫晨科技发展有限公司 | Novel magnetic force burnishing machine |
| CN105479097A (en) * | 2016-01-25 | 2016-04-13 | 陕西斯瑞工业有限责任公司 | CuCr contact surface finishing equipment and method |
| JP2016126808A (en) * | 2014-12-31 | 2016-07-11 | Hoya株式会社 | Method for manufacturing substrate for magnetic disk and end surface polishing device |
| CN106281223A (en) * | 2016-08-13 | 2017-01-04 | 福达合金材料股份有限公司 | For quickly removing abrasive material of soil for electrical contact upsetting burr and circle print and its preparation method and application |
| CN106826530A (en) * | 2015-12-03 | 2017-06-13 | 上海胜僖汽车配件有限公司 | A kind of auto parts and components magnetic force sanding apparatus |
| CN206561347U (en) * | 2017-01-20 | 2017-10-17 | 深圳市泛海统联精密制造有限公司 | Magnetic grinder |
| CN207495248U (en) * | 2017-09-21 | 2018-06-15 | 苏州卡利肯新光讯科技有限公司 | The magnetic grinding bucket and Magnetic Force Mill of die casting product |
| CN108673329A (en) * | 2018-05-14 | 2018-10-19 | 新乡学院 | Vacuum type ultrasound magnetic force cleans polisher lapper |
| CN109015328A (en) * | 2018-08-24 | 2018-12-18 | 福达合金材料股份有限公司 | A method of removal rivet type electrical contact surface defect is polished based on magnetic force |
| CN208759158U (en) * | 2018-09-14 | 2019-04-19 | 温州三隆智能设备科技有限公司 | A kind of magnetic force polisher auxiliary device |
| CN109676438A (en) * | 2018-11-23 | 2019-04-26 | 安徽银点电子科技有限公司 | A kind of electrical contact deburring cleaning polishing technique |
| CN109848765A (en) * | 2019-03-14 | 2019-06-07 | 中船海洋探测技术研究院有限公司 | A kind of magnetic fluid polishing machine and polishing method |
| CN110026827A (en) * | 2019-03-12 | 2019-07-19 | 佛山市迪华科技有限公司 | A kind of lightization magnetic force polished surface treatment process |
| CN110877235A (en) * | 2019-12-03 | 2020-03-13 | 宁波江丰电子材料股份有限公司 | Polishing treatment method for surface of target back plate |
| CN210650130U (en) * | 2019-09-27 | 2020-06-02 | 重庆市鑫铧泰五金制品有限公司 | High-efficient rust cleaning device for hardware processing |
| CN111761417A (en) * | 2019-11-21 | 2020-10-13 | 苏州邦仕威五金科技有限公司 | Hardware polishing process |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3486221B2 (en) * | 1994-02-17 | 2004-01-13 | 共栄電工株式会社 | Surface treatment device by magnetic force |
| JP2002192453A (en) * | 2000-12-25 | 2002-07-10 | Japan Science & Technology Corp | Magnetism applied machining method and device for the same |
| CN207914098U (en) * | 2017-11-22 | 2018-09-28 | 南京沃特电机有限公司 | A kind of automatic abrasive material sorter |
| CN110564303B (en) * | 2019-09-24 | 2020-12-15 | 西南科技大学 | Polishing solution for lead chemical mechanical polishing and oxidation resistance process |
| CN210819056U (en) * | 2019-10-28 | 2020-06-23 | 温州唐风宋雨实业有限公司 | Translation type magnetic polishing machine |
| CN110900421A (en) * | 2019-12-08 | 2020-03-24 | 安徽骄阳软门有限责任公司 | Polishing equipment for steel needle of thread gluing for fixing gauze |
| CN211615173U (en) * | 2020-03-09 | 2020-10-02 | 江西信昌工业制造有限公司 | Automatic needle grinding device for ultrasonic polishing machine |
-
2020
- 2020-10-16 CN CN202011109974.5A patent/CN112454013B/en active Active
Patent Citations (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2009850C1 (en) * | 1991-10-17 | 1994-03-30 | Раид Минулович Халимулин | Vibration machine |
| CN101608310A (en) * | 2008-06-16 | 2009-12-23 | 南京科润工业介质有限公司 | Long-acting emulsion-type antirust fluid |
| CN102909642A (en) * | 2012-09-26 | 2013-02-06 | 成都四威高科技产业园有限公司 | Magnetic grinding aid |
| CN103710086A (en) * | 2013-11-19 | 2014-04-09 | 广西大学 | Aluminium-lithium alloy plate strip cold rolling lubricant |
| CN204248629U (en) * | 2014-07-24 | 2015-04-08 | 凤城市大方增压器有限公司 | A kind of workpiece cleaner |
| JP2016126808A (en) * | 2014-12-31 | 2016-07-11 | Hoya株式会社 | Method for manufacturing substrate for magnetic disk and end surface polishing device |
| CN105058218A (en) * | 2015-08-12 | 2015-11-18 | 合肥鑫艺达抛光机械有限公司 | Operation technological process of magnetic polishers |
| CN205097012U (en) * | 2015-09-28 | 2016-03-23 | 天津鸿鑫晨科技发展有限公司 | Novel magnetic force burnishing machine |
| CN106826530A (en) * | 2015-12-03 | 2017-06-13 | 上海胜僖汽车配件有限公司 | A kind of auto parts and components magnetic force sanding apparatus |
| CN105479097A (en) * | 2016-01-25 | 2016-04-13 | 陕西斯瑞工业有限责任公司 | CuCr contact surface finishing equipment and method |
| CN106281223A (en) * | 2016-08-13 | 2017-01-04 | 福达合金材料股份有限公司 | For quickly removing abrasive material of soil for electrical contact upsetting burr and circle print and its preparation method and application |
| CN206561347U (en) * | 2017-01-20 | 2017-10-17 | 深圳市泛海统联精密制造有限公司 | Magnetic grinder |
| CN207495248U (en) * | 2017-09-21 | 2018-06-15 | 苏州卡利肯新光讯科技有限公司 | The magnetic grinding bucket and Magnetic Force Mill of die casting product |
| CN108673329A (en) * | 2018-05-14 | 2018-10-19 | 新乡学院 | Vacuum type ultrasound magnetic force cleans polisher lapper |
| CN109015328A (en) * | 2018-08-24 | 2018-12-18 | 福达合金材料股份有限公司 | A method of removal rivet type electrical contact surface defect is polished based on magnetic force |
| CN208759158U (en) * | 2018-09-14 | 2019-04-19 | 温州三隆智能设备科技有限公司 | A kind of magnetic force polisher auxiliary device |
| CN109676438A (en) * | 2018-11-23 | 2019-04-26 | 安徽银点电子科技有限公司 | A kind of electrical contact deburring cleaning polishing technique |
| CN110026827A (en) * | 2019-03-12 | 2019-07-19 | 佛山市迪华科技有限公司 | A kind of lightization magnetic force polished surface treatment process |
| CN109848765A (en) * | 2019-03-14 | 2019-06-07 | 中船海洋探测技术研究院有限公司 | A kind of magnetic fluid polishing machine and polishing method |
| CN210650130U (en) * | 2019-09-27 | 2020-06-02 | 重庆市鑫铧泰五金制品有限公司 | High-efficient rust cleaning device for hardware processing |
| CN111761417A (en) * | 2019-11-21 | 2020-10-13 | 苏州邦仕威五金科技有限公司 | Hardware polishing process |
| CN110877235A (en) * | 2019-12-03 | 2020-03-13 | 宁波江丰电子材料股份有限公司 | Polishing treatment method for surface of target back plate |
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