CN117965997A - Method for manufacturing cold roller for shot peening - Google Patents
Method for manufacturing cold roller for shot peening Download PDFInfo
- Publication number
- CN117965997A CN117965997A CN202311812541.XA CN202311812541A CN117965997A CN 117965997 A CN117965997 A CN 117965997A CN 202311812541 A CN202311812541 A CN 202311812541A CN 117965997 A CN117965997 A CN 117965997A
- Authority
- CN
- China
- Prior art keywords
- roller
- heat treatment
- shot peening
- manufacturing
- ingot
- 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
- 238000005480 shot peening Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 41
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 24
- 239000010959 steel Substances 0.000 claims abstract description 24
- 238000005242 forging Methods 0.000 claims abstract description 13
- 238000007670 refining Methods 0.000 claims abstract description 13
- 238000000137 annealing Methods 0.000 claims abstract description 9
- 238000011282 treatment Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 239000011159 matrix material Substances 0.000 claims abstract description 6
- 238000005266 casting Methods 0.000 claims abstract description 5
- 230000009467 reduction Effects 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 3
- 238000005496 tempering Methods 0.000 abstract 2
- 238000010791 quenching Methods 0.000 abstract 1
- 230000000171 quenching effect Effects 0.000 abstract 1
- 239000011651 chromium Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000007788 roughening Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
Landscapes
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
The invention discloses a method for manufacturing a cold roll for shot peening, which belongs to the technical field of roll manufacturing, and comprises the steps of refining a steel raw material by adopting an LF/VD refining furnace, removing impurities by adopting a reduction method, vacuumizing by adopting VD to remove gas in molten steel, casting into an electrode ingot, carrying out electroslag remelting on the electrode ingot to obtain an electroslag ingot with high purity of molten steel, uniform components and fine grains, carrying out heat treatment on the electroslag ingot before forging, and forging and annealing to obtain a roll blank; the roller blank is subjected to spheroidizing annealing and quenching and tempering treatment, and is tempered, processed according to the final heat treatment size after tempering, and finally subjected to heat treatment to obtain the cold roller for shot peening. The invention can manufacture the roller with thinned matrix structure and uniform surface quality, and effectively reduces the problem of strip-shaped color difference of the roller surface after the roller is subjected to shot peening.
Description
Technical Field
The invention relates to the technical field of roller manufacturing, in particular to a method for manufacturing a cold roller for shot peening.
Background
With the continuous development of industries such as home appliances, automobiles and the like, the requirements on products are higher and higher, so that the performance requirements on the surface quality of the used plate and the stability and consistency of the quality are also continuously improved, the roller which is directly contacted with the plate surface has direct influence on the surface quality of the plate, and the quality of the roller can directly influence the surface quality of the plate.
Therefore, some manufacturers use shot peening, chromium plating techniques and the like to maintain the surface quality of the roller, the techniques have higher requirements on the original surface quality of the roller, and strip-shaped color difference defects are easy to occur after the roller is roughened, so that the roughened roller cannot be directly used for rolling, and therefore, a manufacturing method of the roller for shot peening is needed, the manufactured roller can effectively improve the surface quality of the roller, and some color difference problems caused by the roller quality after the roughening are reduced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for manufacturing a cold roll for shot peening, and the manufactured roll can effectively improve the surface quality of the roll and reduce some chromatic aberration problems caused by the quality of the roll after roughening.
In order to solve the technical problems, the invention adopts the following technical scheme: a method of manufacturing a cold roll for shot peening comprising the steps of:
Step 1: refining steel, namely refining the steel raw material by adopting an LF/VD refining furnace, removing impurities by adopting a reduction method, vacuumizing by adopting VD to remove gas in molten steel, and casting into an electrode ingot;
Step 2: electroslag remelting is carried out on the electrode ingot, so that an electroslag ingot with high molten steel purity, uniform components and fine grains is obtained;
Step 3: reassigning and homogenizing alloy components in the electroslag ingot through high-temperature heating treatment, forging, and annealing to obtain a roller blank;
Step 4: carrying out heat treatment on the roller blank to obtain refined grains and uniformly distributed spherical or granular carbide, and improving the mechanical properties of the roller matrix;
Step 5: processing the roller blank after heat treatment according to the final heat treatment size;
Step 6: and carrying out final heat treatment on the processed roller blank, and carrying out finish machining according to the required size after the final heat treatment to obtain the cold roller for shot peening.
The technical scheme of the invention is further improved as follows: the steel raw materials in the step 1 comprise the following chemical components in percentage by weight: c0.7-0.90%; si 0.50-0.70%; mn 0.50-0.70%; cr 4.8-5.2%; mo0.20-0.50%; ni is less than or equal to 0.30 percent; s is less than or equal to 0.025 percent; p is less than or equal to 0.025 percent.
The technical scheme of the invention is further improved as follows: in the step 2, the diameter ratio of the electrode ingot to the crystallizer for electroslag is not more than 1.3.
The technical scheme of the invention is further improved as follows: in the step 2, the melting speed of electroslag remelting is controlled to be 450-550 kg/min.
The technical scheme of the invention is further improved as follows: the high-temperature heating treatment in the step 3 is specifically that the heating temperature is 1200-1250 ℃, the heat preservation time is 10-15 h, and the forging ratio in the forging process is more than or equal to 3.
The technical scheme of the invention is further improved as follows: and the heat treatment in the step 4 is specifically that the roller blank is subjected to 1020-1060 ℃ and 20-30 h normalizing heat treatment and then 820 ℃ and 20h spheroidizing annealing heat treatment.
By adopting the technical scheme, the invention has the following technical progress: electroslag remelting is carried out on the electrode ingot to obtain an electroslag ingot with high purity of molten steel, uniform components and fine grains, and the high-temperature heating treatment is carried out on the electroslag ingot to redistribute and homogenize alloy components in the electroslag ingot to provide a basis for the quality improvement of a subsequent roller. Through reasonable element proportion and adaptive electroslag remelting, heat treatment and forging technology, the matrix structure of the roller is thinned by matching with final heat treatment and finish machining, and the uniformity of the surface quality of the roller is improved, so that the problem of strip-shaped color difference of the roller surface after shot peening of the roller is effectively reduced. The quality of the roller after shot peening is improved.
Detailed Description
The invention is further illustrated by the following examples:
a method for manufacturing a cold roll for shot peening comprises the following specific steps:
step 1: refining steel, namely refining the steel raw materials by adopting an LF/VD refining furnace, wherein the steel raw materials comprise the following chemical components in percentage by weight: c0.7-0.90%; si 0.50-0.70%; mn 0.50-0.70%; cr4.8-5.2%; mo is 0.20-0.50%; ni is less than or equal to 0.30 percent; s is less than or equal to 0.025 percent; p is less than or equal to 0.025 percent. Removing impurities by a reduction method, vacuumizing by VD to remove gas in molten steel, and casting into an electrode ingot;
step 2: and carrying out electroslag remelting on the electrode ingot to obtain an electroslag ingot with high molten steel purity, uniform components and fine grains, wherein the diameter ratio of the electrode ingot to the crystallizer for electroslag is not more than 1.3, and the melting speed of the electroslag remelting is controlled to be 450-550 kg/min.
Step 3: the electroslag ingot is subjected to high-temperature heating treatment to redistribute and homogenize alloy components in the electroslag ingot, wherein the high-temperature heating treatment is specifically carried out at a heating temperature of 1200-1250 ℃ for 10-15 hours, forging is carried out, the forging ratio in the forging process is more than or equal to 3, and annealing is carried out to obtain the roller blank.
Step 4: and carrying out heat treatment on the roller blank, carrying out 1020-1060 x 20-30 h normalizing heat treatment and 820 ℃ x 20h spheroidizing annealing heat treatment on the roller blank to obtain refined grains and obtain uniformly distributed spherical or granular carbide, and improving the mechanical properties of the roller matrix.
Step 5: processing the roller blank after heat treatment according to the final heat treatment size;
Step 6: and carrying out final heat treatment on the processed roller blank, and carrying out finish machining according to the required size after the final heat treatment to obtain the cold roller for shot peening.
Embodiment one:
in the embodiment, steel chemical components and contents are selected and cast into billets, and the following table shows the chemical components in the steel; (in the table, the unit is wt%, and the balance is Fe and a small amount of impurities)
| C | Si | Mn | Cr | Mo | Ni | P | S |
| 0.82 | 0.35 | 0.63 | 4.95 | 0.31 | 0.11 | 0.017 | 0.002 |
Adding chemical components and weight percentages of steel materials in the table, refining by adopting an LF/VD refining furnace, removing impurities by using a reduction method, vacuumizing by VD to remove gas in molten steel, and casting into an electrode ingot; the size of the electrode ingot is phi 500 x 350 mm, the size of a crystallizer for electroslag remelting is phi 645 x 3000mm, the diameter ratio is 1.28, and the average melting speed in the electroslag process is 580kg/min; the high-temperature heating temperature of the electroslag ingot is 1220 ℃, and the heat preservation time is 11h; after forging, preserving heat for 23 hours at 1030 ℃, and performing spheroidizing annealing at 820 ℃ for 20 hours to obtain a roller blank; and (5) processing and finally performing heat treatment on the roller blank to obtain the cold roller after shot peening.
The cold roller for shot peening is processed by using the chemical components, the content and the heat treatment process of the steel materials in the table, the hardness of the cold roller for shot peening is in accordance with the user requirement, the ultrasonic flaw detection is in accordance with the GB/T13314-2008 standard, the roller surface is free from the band-shaped color difference defect after shot peening, and the surface quality is in accordance with the requirement of rolling high-quality plates.
The invention can manufacture the roller with thinned matrix structure and uniform surface quality, can effectively reduce the problem of strip-shaped color difference of the roller surface after the shot peening of the roller, effectively improve the quality of the roller after the subsequent shot peening, and ensure the performance requirement of the plate in production.
The above examples are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the design of the present invention.
Claims (6)
1. A method for manufacturing a cold roll for shot peening is characterized by comprising the following steps: the method comprises the following steps:
Step 1: refining steel, namely refining the steel raw material by adopting an LF/VD refining furnace, removing impurities by adopting a reduction method, vacuumizing by adopting VD to remove gas in molten steel, and casting into an electrode ingot;
Step 2: electroslag remelting is carried out on the electrode ingot, so that an electroslag ingot with high molten steel purity, uniform components and fine grains is obtained;
Step 3: reassigning and homogenizing alloy components in the electroslag ingot through high-temperature heating treatment, forging, and annealing to obtain a roller blank;
Step 4: carrying out heat treatment on the roller blank to obtain refined grains and uniformly distributed spherical or granular carbide, and improving the mechanical properties of the roller matrix;
Step 5: processing the roller blank after heat treatment according to the final heat treatment size;
Step 6: and carrying out final heat treatment on the processed roller blank, and carrying out finish machining according to the required size after the final heat treatment to obtain the cold roller for shot peening.
2. A method for manufacturing a cold roll for shot peening as defined in claim 1, wherein: the steel raw materials in the step 1 comprise the following chemical components in percentage by weight: c0.7-0.90%; si 0.50-0.70%; mn 0.50-0.70%; cr 4.8-5.2%; mo is 0.20-0.50%; ni is less than or equal to 0.30 percent; s is less than or equal to 0.025 percent; p is less than or equal to 0.025 percent.
3. A method for manufacturing a cold roll for shot peening as defined in claim 1, wherein: in the step 2, the diameter ratio of the electrode ingot to the crystallizer for electroslag is not more than 1.3.
4. A method of manufacturing a cold roll for shot peening according to claim 3, wherein: in the step 2, the melting speed of electroslag remelting is controlled to be 450-550 kg/min.
5. A method for manufacturing a cold roll for shot peening as defined in claim 1, wherein: the high-temperature heating treatment in the step 3 is specifically that the heating temperature is 1200-1250 ℃, the heat preservation time is 10-15 h, and the forging ratio in the forging process is more than or equal to 3.
6. A method for manufacturing a cold roll for shot peening as defined in claim 1, wherein: and the heat treatment in the step 4 is specifically that the roller blank is subjected to 1020-1060 ℃ and 20-30 h normalizing heat treatment and then 820 ℃ and 20h spheroidizing annealing heat treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311812541.XA CN117965997A (en) | 2023-12-27 | 2023-12-27 | Method for manufacturing cold roller for shot peening |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311812541.XA CN117965997A (en) | 2023-12-27 | 2023-12-27 | Method for manufacturing cold roller for shot peening |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117965997A true CN117965997A (en) | 2024-05-03 |
Family
ID=90848603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311812541.XA Pending CN117965997A (en) | 2023-12-27 | 2023-12-27 | Method for manufacturing cold roller for shot peening |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117965997A (en) |
-
2023
- 2023-12-27 CN CN202311812541.XA patent/CN117965997A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110438310B (en) | Hot work die steel and heat treatment method thereof | |
| CN110656294B (en) | Working roll special for tin-plating finisher and manufacturing method thereof | |
| US20230332261A1 (en) | Method for manufacturing equal-hardness cr5 back up roll | |
| CN114351042B (en) | Die steel and preheating treatment method for carbide dispersion in die steel | |
| CN109402514A (en) | A kind of dedicated hot stamping die steel HS7 and preparation method thereof | |
| CN111558680B (en) | Manufacturing method of large-section F53 solid forging | |
| JP2011510175A (en) | High alloy cold die steel | |
| CN103753116B (en) | The manufacture method of sendzimir mill working roll | |
| CN109023104B (en) | 4Cr13 plastic die steel and preparation method thereof | |
| CN111088448A (en) | Cobalt-based high-temperature alloy strip foil and preparation method thereof | |
| WO2022166155A1 (en) | Container crane wheel steel, wheel and preparation method therefor | |
| CN113215489A (en) | High-strength-plasticity low-chromium nickel-saving type duplex stainless steel and stretching preparation method thereof | |
| CN108251757B (en) | Yb-containing high-performance bearing steel electroslag ingot and one-step material forming process thereof | |
| CN109628833B (en) | Cr-Mo-Si-V cold-work die steel and preparation method thereof | |
| CN117965997A (en) | Method for manufacturing cold roller for shot peening | |
| CN115637370A (en) | Cold-work die steel for flame quenching | |
| CN114774762A (en) | Production method of H13 hot-work die steel bar with good low-power quality | |
| CN113621866A (en) | Manufacturing method of supporting roll for rolling battery pole piece | |
| TWI557244B (en) | Method of fabricating corrosion-resistant high nickel alloy | |
| CN107937837A (en) | A kind of manufacture method of high-performance Pharmic die | |
| CN115125376B (en) | Post-forging heat treatment process and forging process of G102Cr18Mo stainless steel forging | |
| CN115896594B (en) | High-strength and high-toughness H13 die steel for aluminum extrusion and preparation method thereof | |
| CN114645216B (en) | Die steel and preparation method thereof | |
| CN113265512B (en) | Method for eliminating color difference of processing surface of electroslag martensite circular forging machine | |
| CN115058652B (en) | Sendzimir mill work roll with roll mark resistance and method of making same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |