CN112275818A - Machining method of guide rail for elevator - Google Patents
Machining method of guide rail for elevator Download PDFInfo
- Publication number
- CN112275818A CN112275818A CN202010996219.7A CN202010996219A CN112275818A CN 112275818 A CN112275818 A CN 112275818A CN 202010996219 A CN202010996219 A CN 202010996219A CN 112275818 A CN112275818 A CN 112275818A
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- CN
- China
- Prior art keywords
- guide rail
- rail body
- temperature
- treatment
- elevator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 17
- 238000003754 machining Methods 0.000 title description 3
- 238000000641 cold extrusion Methods 0.000 claims abstract description 25
- 238000010622 cold drawing Methods 0.000 claims abstract description 24
- 238000001035 drying Methods 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 17
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 16
- 239000010935 stainless steel Substances 0.000 claims abstract description 16
- 238000004140 cleaning Methods 0.000 claims abstract description 11
- 238000003672 processing method Methods 0.000 claims abstract description 8
- 238000005507 spraying Methods 0.000 claims description 16
- 239000000243 solution Substances 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000006104 solid solution Substances 0.000 claims description 10
- 238000007590 electrostatic spraying Methods 0.000 claims description 5
- 238000001125 extrusion Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000005238 degreasing Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 7
- 230000003647 oxidation Effects 0.000 abstract description 7
- 238000007254 oxidation reaction Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 6
- 230000002035 prolonged effect Effects 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/01—Extruding metal; Impact extrusion starting from material of particular form or shape, e.g. mechanically pre-treated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/14—Making other products
- B21C23/142—Making profiles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
- B21C35/02—Removing or drawing-off work
- B21C35/023—Work treatment directly following extrusion, e.g. further deformation or surface treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
- B21C35/02—Removing or drawing-off work
- B21C35/03—Straightening the work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/02—Guideways; Guides
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
Abstract
The invention discloses a processing method of a guide rail for an elevator, which comprises the following steps: a. selecting materials; b. solution treatment; c. preliminary cold extrusion and drawing; d. cleaning; e. secondary cold extrusion and drawing; f. straightening; g. drying; h. and (5) finishing. By the mode, the processing method of the guide rail for the elevator, provided by the invention, adopts the soft stainless steel as the material, saves the cost, enhances the surface hardness of the soft stainless steel material through solution treatment and multiple cold extrusion and drawing, increases the wear resistance, simultaneously enables the guide rail to have excellent oxidation and corrosion resistance, prolongs the service life and further ensures the quality of the product.
Description
Technical Field
The invention relates to the technical field of elevator guide rails, in particular to a processing method of a guide rail for an elevator.
Background
As a transportation means in the vertical direction, an elevator has long become an indispensable transportation means in buildings and public places, and is accompanied with more and more diversified demands, and along with the development of economic society, the land use price is higher and higher, so that the elevator in the building is required to be more area-saving and better, the elevator is required to be more area-saving, and the elevator is mainly used for reducing the area of a hoistway.
The fixed mounting of the counterweight guide rails and car guide rails in elevators is of paramount importance and is directly related to the operational safety of elevators. At present, most guide rails have the characteristics of complex profiles, high strength, high machining precision requirement and the like, but the guide rails produced in the prior art have low surface hardness and poor wear resistance, so that the product quality is reduced, and the service life of the guide rails is shortened.
Disclosure of Invention
The invention mainly solves the technical problem of providing a processing method of a guide rail for an elevator, which adopts soft stainless steel as a material, saves cost, enhances the surface hardness of the soft stainless steel material through solution treatment and multiple cold extrusion and drawing, increases the wear resistance, simultaneously ensures that the guide rail has excellent oxidation and corrosion resistance, prolongs the service life and further ensures the quality of products.
In order to solve the technical problems, the invention adopts a technical scheme that: the processing method of the guide rail for the elevator comprises the following specific steps:
a. selecting materials: selecting 321 soft stainless steel to prepare a guide rail blank;
b. solution treatment: putting the guide rail blank into a solid solution treatment furnace for solid solution heating treatment, wherein the temperature is increased from 185-plus-one temperature of 245 ℃ to 275-plus-one temperature of 345 ℃ during the heating treatment, the temperature is kept for 25-35min in the middle, and finally the temperature is kept for 30-40 min;
c. primary cold extruding and drawing: repeatedly carrying out cold extrusion and drawing for three times to prepare a guide rail body;
d. cleaning: cleaning the surface of the guide rail body and removing oil stains;
e. secondary cold extrusion and drawing: carrying out cold extrusion drawing on the cleaned guide rail body and the R groove on the guide rail body;
f. straightening; straightening the guide rail body subjected to the secondary cold extrusion and drawing treatment by using a straightening machine;
g. drying, namely performing spraying treatment on the surface of the guide rail body, and then drying by adopting a high-temperature furnace, wherein the drying temperature is 185-225 ℃, and the drying time is 15-25 min;
h. and finishing, namely performing fine extrusion drawing on the dried guide rail body and the R groove on the guide rail body to obtain a finished guide rail product.
In a preferred embodiment of the present invention, the arc angle of the R-shaped groove on the guide rail body is 89.5 to 102.05 °.
In a preferred embodiment of the invention, the surface hardness of the finished guide rail is HRC 30-33 degrees.
In a preferred embodiment of the invention, the curvature of the straightened rail body is not more than 0.3-0.6% of the total length.
In a preferred embodiment of the present invention, the spraying process is performed by an electrostatic spraying process.
In a preferred embodiment of the present invention, alkaline water is used for removing the oil stain.
The invention has the beneficial effects that: according to the processing method of the guide rail for the elevator, the soft stainless steel is adopted as the material, the cost is saved, the surface hardness of the soft stainless steel material is enhanced through solution treatment and multiple cold drawing, the wear resistance is improved, meanwhile, the guide rail has excellent oxidation and corrosion resistance, the service life is prolonged, and the quality of the product is guaranteed.
Drawings
Fig. 1 is a flow chart of a preferred embodiment of a method of processing a guide rail for an elevator of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention includes:
example 1:
a. selecting materials: selecting 321 soft stainless steel to prepare a guide rail blank;
b. solution treatment: putting the guide rail blank into a solid solution treatment furnace for solid solution heating treatment, wherein the temperature is increased from 185 ℃ to 275 ℃ during heating treatment, the temperature is preserved for 25min in the middle, and finally the temperature is preserved for 30 min;
c. primary cold extruding and drawing: repeatedly carrying out cold extrusion and drawing for three times to prepare a guide rail body;
d. cleaning: cleaning the surface of the guide rail body and removing oil stains;
e. secondary cold extrusion and drawing: carrying out cold extrusion drawing on the cleaned guide rail body and the R groove on the guide rail body;
f. straightening; straightening the guide rail body subjected to the secondary cold extrusion and drawing treatment by using a straightening machine;
g. drying, namely spraying the surface of the guide rail body, and then drying by adopting a high-temperature furnace, wherein the drying temperature is 185 ℃, and the drying time is 15 min;
h. and finishing, namely performing fine extrusion drawing on the dried guide rail body and the R groove on the guide rail body to obtain a finished guide rail product.
In the above, the arc angle of the R groove on the guide rail body is 89.5 °.
The soft stainless steel material enhances the surface hardness through solution treatment and multiple times of cold drawing, and the surface hardness of the finished guide rail is HRC30 degrees.
The curvature of the straightened guide rail body is not more than 0.3 percent of the total length, the straightening effect is good, and the condition that the curvature of the straightened guide rail body is not more than 0.3 percent of the total length is ensured
The quality of the guide rail is verified.
Furthermore, the spraying process is carried out by adopting an electrostatic spraying process during the spraying treatment, and a layer of coating is formed on the outer surface of the guide rail body after the spraying treatment, so that the guide rail has excellent oxidation and corrosion resistance, the service life is prolonged, and the quality of the guide rail is ensured.
In the embodiment, alkaline water is adopted during oil stain removal, so that the oil stain removal effect is good.
Example 2:
a. selecting materials: selecting 321 soft stainless steel to prepare a guide rail blank;
b. solution treatment: putting the guide rail blank into a solid solution treatment furnace for solid solution heating treatment, wherein in the heating treatment, the temperature is increased from 200 ℃ to 300 ℃, the temperature is preserved for 30min in the middle, and finally, the temperature is preserved for 35 min;
c. primary cold extruding and drawing: repeatedly carrying out cold extrusion and drawing for three times to prepare a guide rail body;
d. cleaning: cleaning the surface of the guide rail body and removing oil stains;
e. secondary cold extrusion and drawing: carrying out cold extrusion drawing on the cleaned guide rail body and the R groove on the guide rail body;
f. straightening; straightening the guide rail body subjected to the secondary cold extrusion and drawing treatment by using a straightening machine;
g. drying, namely spraying the surface of the guide rail body, and then drying by adopting a high-temperature furnace, wherein the drying temperature is 200 ℃, and the drying time is 20 min;
h. and finishing, namely performing fine extrusion drawing on the dried guide rail body and the R groove on the guide rail body to obtain a finished guide rail product.
In the above, the arc angle of the R groove on the guide rail body is 98.5 °.
The soft stainless steel material enhances the surface hardness through solution treatment and multiple times of cold drawing, and the surface hardness of the finished guide rail is HRC32 degrees.
The curvature of the straightened guide rail body is not more than 0.45 percent of the total length, the straightening effect is good, and the quality of the guide rail is ensured.
Furthermore, the spraying process is carried out by adopting an electrostatic spraying process during the spraying treatment, and a layer of coating is formed on the outer surface of the guide rail body after the spraying treatment, so that the guide rail has excellent oxidation and corrosion resistance, the service life is prolonged, and the quality of the guide rail is ensured.
In the embodiment, alkaline water is adopted during oil stain removal, so that the oil stain removal effect is good.
Example 3:
a. selecting materials: selecting 321 soft stainless steel to prepare a guide rail blank;
b. solution treatment: putting the guide rail blank into a solid solution treatment furnace for solid solution heating treatment, wherein the temperature is increased from 245 ℃ to 345 ℃ during heating treatment, the temperature is preserved for 35min in the middle, and finally, the temperature is preserved for 40 min;
c. primary cold extruding and drawing: repeatedly carrying out cold extrusion and drawing for three times to prepare a guide rail body;
d. cleaning: cleaning the surface of the guide rail body and removing oil stains;
e. secondary cold extrusion and drawing: carrying out cold extrusion drawing on the cleaned guide rail body and the R groove on the guide rail body;
f. straightening; straightening the guide rail body subjected to the secondary cold extrusion and drawing treatment by using a straightening machine;
g. drying, namely performing spraying treatment on the surface of the guide rail body, and then drying by adopting a high-temperature furnace, wherein the drying temperature is 225 ℃, and the drying time is 25 min;
h. and finishing, namely performing fine extrusion drawing on the dried guide rail body and the R groove on the guide rail body to obtain a finished guide rail product.
In the above, the arc angle of the R-shaped groove on the guide rail body is 102.05 °.
The soft stainless steel material enhances the surface hardness through solution treatment and multiple times of cold drawing, and the surface hardness of the finished guide rail is HRC33 degrees.
The curvature of the straightened guide rail body is not more than 0.6 percent of the total length, the straightening effect is good, and the condition that the curvature of the straightened guide rail body is not more than 0.6 percent of the total length is ensured
The quality of the guide rail is verified.
Furthermore, the spraying process is carried out by adopting an electrostatic spraying process during the spraying treatment, and a layer of coating is formed on the outer surface of the guide rail body after the spraying treatment, so that the guide rail has excellent oxidation and corrosion resistance, the service life is prolonged, and the quality of the guide rail is ensured.
In the embodiment, alkaline water is adopted during oil stain removal, so that the oil stain removal effect is good.
In conclusion, the processing method of the guide rail for the elevator, provided by the invention, adopts the soft stainless steel as the material, so that the cost is saved, the surface hardness of the soft stainless steel material is enhanced through solution treatment and multiple cold extrusion and drawing, the wear resistance is improved, meanwhile, the guide rail has excellent oxidation and corrosion resistance, the service life is prolonged, and the quality of the product is ensured.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A processing method of a guide rail for an elevator is characterized by comprising the following specific steps:
a. selecting materials: selecting 321 soft stainless steel to prepare a guide rail blank;
b. solution treatment: putting the guide rail blank into a solid solution treatment furnace for solid solution heating treatment, wherein the temperature is increased from 185-plus-one temperature of 245 ℃ to 275-plus-one temperature of 345 ℃ during the heating treatment, the temperature is kept for 25-35min in the middle, and finally the temperature is kept for 30-40 min;
c. primary cold extruding and drawing: repeatedly carrying out cold extrusion and drawing for three times to prepare a guide rail body;
d. cleaning: cleaning the surface of the guide rail body and removing oil stains;
e. secondary cold extrusion and drawing: carrying out cold extrusion drawing on the cleaned guide rail body and the R groove on the guide rail body;
f. straightening; straightening the guide rail body subjected to the secondary cold extrusion and drawing treatment by using a straightening machine;
g. drying, namely performing spraying treatment on the surface of the guide rail body, and then drying by adopting a high-temperature furnace, wherein the drying temperature is 185-225 ℃, and the drying time is 15-25 min;
h. and finishing, namely performing fine extrusion drawing on the dried guide rail body and the R groove on the guide rail body to obtain a finished guide rail product.
2. The method of manufacturing a guide rail for an elevator according to claim 1, wherein an arc angle of the R-groove of the guide rail body is 89.5 to 102.05 °.
3. The method for processing the guide rail for the elevator as set forth in claim 1, wherein the surface hardness of the finished guide rail is HRC30 ° -33 °.
4. The method of claim 1, wherein the straightened rail body has a curvature of not more than 0.3-0.6% of the total length.
5. The method for processing the guide rail for the elevator according to claim 1, wherein the spraying treatment is performed by an electrostatic spraying process.
6. The method of claim 1, wherein alkaline water is used for degreasing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010996219.7A CN112275818A (en) | 2020-09-21 | 2020-09-21 | Machining method of guide rail for elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010996219.7A CN112275818A (en) | 2020-09-21 | 2020-09-21 | Machining method of guide rail for elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112275818A true CN112275818A (en) | 2021-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010996219.7A Pending CN112275818A (en) | 2020-09-21 | 2020-09-21 | Machining method of guide rail for elevator |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101274404A (en) * | 2007-03-31 | 2008-10-01 | 张培良 | Process for forming aluminum conducting track section bar |
| CN102335680A (en) * | 2010-07-27 | 2012-02-01 | 天津塞维拉电梯轨道系统有限公司 | Forming technology of elevator guide rail |
| CN102397910A (en) * | 2010-09-09 | 2012-04-04 | 无锡鸿声铝业有限公司 | Production process of guide rail bar section bar |
| CN104588432A (en) * | 2014-12-12 | 2015-05-06 | 西南铝业（集团）有限责任公司 | Preparation process for aluminum alloy guide rail profile |
| CN105063308A (en) * | 2015-07-20 | 2015-11-18 | 常熟市南方不锈钢链条有限公司 | Process for manufacturing guide rail special for heap type refrigerator |
| CN110757100A (en) * | 2019-10-17 | 2020-02-07 | 江苏福旺重工科技有限公司 | Preparation method of elevator guide rail |
-
2020
- 2020-09-21 CN CN202010996219.7A patent/CN112275818A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101274404A (en) * | 2007-03-31 | 2008-10-01 | 张培良 | Process for forming aluminum conducting track section bar |
| CN102335680A (en) * | 2010-07-27 | 2012-02-01 | 天津塞维拉电梯轨道系统有限公司 | Forming technology of elevator guide rail |
| CN102397910A (en) * | 2010-09-09 | 2012-04-04 | 无锡鸿声铝业有限公司 | Production process of guide rail bar section bar |
| CN104588432A (en) * | 2014-12-12 | 2015-05-06 | 西南铝业（集团）有限责任公司 | Preparation process for aluminum alloy guide rail profile |
| CN105063308A (en) * | 2015-07-20 | 2015-11-18 | 常熟市南方不锈钢链条有限公司 | Process for manufacturing guide rail special for heap type refrigerator |
| CN110757100A (en) * | 2019-10-17 | 2020-02-07 | 江苏福旺重工科技有限公司 | Preparation method of elevator guide rail |
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Application publication date: 20210129 |