Solder strip flattening process

Abstract

The invention discloses a welding strip flattening process, and relates to the technical field of welding strips, and the welding strip flattening process comprises the following steps: preheating a welding strip; the preheated welding strip is conveyed into a flattening die to be flattened; the flattened welding strip is cooled; and the cooled welding strip is straightened. According to the method, the database can be obtained, the flattening thickness can be calculated, meanwhile, multiple judgment modes can be suitable for different welding strip conditions, it is guaranteed that the obtained operation parameters are more accurate, and compared with the mode that the operation parameters are adjusted through manual experience in the past, the method can reduce welding strip losses to a great extent, and the working efficiency is improved. And a full-automatic algorithm is adopted, so that the method can be suitable for large-batch processing.

Description

Technical Field

[0001] The invention relates to the technical field of welding strips, in particular to a welding strip flattening process. Background Art

[0002] Photovoltaic modules are made up of multiple photovoltaic cells connected in series or in parallel through welding ribbons. Welding ribbons are important raw materials in the welding process of photovoltaic modules. Their main function is to collect and transmit the current generated by the cells and eventually introduce the current into the junction box. The quality and performance of the welding ribbons directly affect the current collection efficiency and overall performance of photovoltaic modules. When processing welding ribbons, the experience of the staff is generally used to flatten the welding ribbons, which has high requirements for employees and is prone to errors due to manual judgment. Summary of the invention

[0003] In view of the problems existing in the existing welding strip flattening and system, the present invention is proposed.

[0004] Therefore, the problem to be solved by the present invention is that the requirements on employees are high and the manual judgment method is prone to errors.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] In a first aspect, an embodiment of the present invention provides a solder strip flattening process, which comprises the following steps:

[0007] Preheating the solder strip;

[0008] The preheated solder strip is sent to a flattening die for flattening;

[0009] Cooling the flattened welding strip;

[0010] The cooled solder strip is straightened.

[0011] As a preferred solution of the solder strip flattening process of the present invention, when the solder strip is preheated, the specific steps include:

[0012] adding the solder strip into the heating chamber, and then adding hydrogen gas into the heating chamber;

[0013] The heating chamber is heated at a rate of 15-20°C / min until the temperature reaches 360-400°C and maintained for 5-10 minutes;

[0014] Then, nitrogen is injected into the heating chamber at a rate of 6000-7000 L / H, and then the chamber is heated to 450-480°C for 30 minutes.

[0015] Then air cool until the temperature of the solder strip reaches 150-200°C;

[0016] Exhaust the gas in the heating chamber.

[0017] As a preferred solution of the solder strip flattening process of the present invention, the step of flattening the preheated solder strip includes:

[0018] Get the actual thickness of the current welding strip and the target thickness of the welding strip, and calculate the thickness that needs to be flattened;

[0019] Set the phase difference threshold and make a primary judgment;

[0020] Outputting the operating parameters of the flattening die according to the judgment result and making the flattening die operate;

[0021] The operating parameters of the flattening die include die pressure and pressing time.

[0022] As a preferred solution of the flattening process of the welding strip of the present invention, when calculating the thickness to be flattened, the calculation formula is:

[0023] e(t)=r(t)-y(t);

[0024] Where e(t) represents the error thickness, r(t) represents the target thickness, and y(t) represents the current thickness.

[0025] As a preferred solution of the solder strip flattening process of the present invention, the steps of the primary judgment are specifically as follows:

[0026] Set the phase difference threshold to X and the query interval to [e(t)-X,e(t)+X];

[0027] Query the database to determine whether the information data in the query interval exists in the database. If it exists, calculate and output it; if it does not exist, predict and output it.

[0028] As a preferred solution of the welding strip flattening process of the present invention, the operation steps of the prediction output are as follows:

[0029] Obtaining information data closest to the error thickness, and obtaining the flattening die operation parameters corresponding to the information data;

[0030] Calculate the ratio of the information data to the error thickness, and determine whether the ratio is greater than a preset value;

[0031] If it is greater than the preset value, the mold pressure and the pressing time are adjusted synchronously, and then it is re-determined whether the new error thickness is within the query range, and this step is repeated until the new error thickness is within the query range;

[0032] If it is not greater than the preset value, the mold pressure and the pressing time are adjusted, and then the new error thickness is re-determined to see if it is within the query range. This step is repeated until the new error thickness is within the query range.

[0033] The calculation formula of the ratio value is:

[0034]

[0035] Wherein, B represents the ratio value and w(i) represents the information data.

[0036] As a preferred solution of the solder strip flattening process of the present invention, the method of synchronously adjusting the mold pressure and the pressing time or adjusting one of them comprises:

[0037]

[0038] Where, L new and T new They represent the newly set mold pressure and pressing time, L old and T old They are respectively represented by the mold pressure and pressing time in the database, and α and β are both represented as protection values.

[0039] As a preferred solution of the solder strip flattening process of the present invention, the step of calculating and outputting includes:

[0040] Determine whether the number of information data in the query interval is greater than the calculated value.

[0041] When it is greater than, then type A calculation is performed;

[0042] When it is not greater than, perform Class B calculation.

[0043] As a preferred solution of the welding strip flattening process of the present invention, the step of class A calculation includes:

[0044] Obtain the mold pressure and pressing time corresponding to all information data, and load the calculation formula to obtain the newly set mold pressure and pressing time to make the flattening mold operate. The calculation formula is:

[0045]

[0046] In the formula, n represents the number of information data.

[0047] As a preferred solution of the welding strip flattening process of the present invention, the step of class B calculation includes:

[0048] Obtain the mold pressure and pressing time corresponding to all information data, and load the calculation formula to obtain the newly set mold pressure and pressing time to make the flattening mold operate. The calculation formula is:

[0049]

[0050] Where θ is the growth value.

[0051] The beneficial effects of the present invention are: being able to obtain a database and calculate the flattened thickness, and at the same time, a variety of judgment methods can be applicable to different welding strip situations, thereby ensuring that the obtained operating parameters are more accurate. Compared with the previous adjustment of operating parameters through manual experience, this method can greatly reduce the loss of welding strips, and the fully automatic algorithm can adapt to large-scale processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0053] Figure 1 Flow chart of the ribbon flattening process. DETAILED DESCRIPTION

[0054] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0055] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0056] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0057] In the present invention, unless otherwise clearly specified and limited, the terms "install, connect, connect" should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection or an integral connection; it can also be a mechanical connection, an electrical connection or a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] Example 1

[0059] Reference Figure 1 , which is the first embodiment of the present invention, provides a solder strip flattening process, comprising the following steps:

[0060] S1. Preheat the soldering tape.

[0061] When preheating the solder strip, the specific steps include:

[0062] adding the solder strip into the heating chamber, and then adding hydrogen gas into the heating chamber;

[0063] The heating chamber is heated at a rate of 15°C / min until the temperature reaches 360°C and maintained for 5 minutes;

[0064] Then, nitrogen was injected into the heating chamber at a rate of 6000 L / H, and then the chamber was heated to 450°C for 30 minutes.

[0065] Then air cool until the temperature of the solder strip reaches 150°C;

[0066] Exhaust the gas in the heating chamber.

[0067] S2. Send the preheated solder strip to a flattening mold for flattening.

[0068] The steps of flattening the preheated solder strip include:

[0069] Get the actual thickness of the current welding strip and the target thickness of the welding strip, and calculate the thickness that needs to be flattened;

[0070] When calculating the thickness that needs to be flattened, the calculation formula is:

[0071] e(t)=r(t)-y(t);

[0072] Where e(t) represents the error thickness, r(t) represents the target thickness, and y(t) represents the current thickness.

[0073] In this embodiment, if the current thickness of the solder strip is 0.25 mm and the target thickness is 0.2 mm, the error thickness is obtained by calculation to be -0.05 mm, that is, the solder strip needs to be flattened by 0.05 mm.

[0074] Set the phase difference threshold and make a primary judgment;

[0075] The steps of the primary judgment are specifically as follows:

[0076] Set the phase difference threshold to X and the query interval to [e(t)-X,e(t)+X];

[0077] Query the database to determine whether the information data in the query interval exists in the database. If it exists, calculate and output it; if it does not exist, predict and output it.

[0078] In this embodiment, the phase difference threshold X is set to 0.01 mm, and the query interval is [0.04 mm, 0.06 mm].

[0079] The steps for predicting output are:

[0080] Obtaining information data closest to the error thickness, and obtaining the flat pressing die operation parameters corresponding to the information data;

[0081] Calculate the ratio of the information data to the error thickness, and determine whether the ratio is greater than a preset value;

[0082] If it is greater than the preset value, the mold pressure and the pressing time are adjusted synchronously, and then it is re-determined whether the new error thickness is within the query range, and this step is repeated until the new error thickness is within the query range;

[0083] If it is not greater than the preset value, the mold pressure and the pressing time are adjusted, and then the new error thickness is re-determined to see if it is within the query range. This step is repeated until the new error thickness is within the query range.

[0084] The calculation formula of the ratio value is:

[0085]

[0086] Wherein, B represents the ratio value and w(i) represents the information data.

[0087] In this embodiment, the information data closest to the error thickness is obtained, specifically 0.07 mm, so the calculated ratio value is:

[0088] The ratio value = 0.07 / 0.05 = 1.4, and when the preset value is set to 1.3, 1.4>1.3, so the mold pressure and pressing time are adjusted synchronously;

[0089] If the preset value is set to 1.5, then 1.4<1.5, so either the mold pressure or the pressing time should be adjusted.

[0090] Methods for adjusting mold pressure and pressing time synchronously or selectively include:

[0091]

[0092] Where, L new and T new They represent the newly set mold pressure and pressing time, L old and T old They are respectively represented by the mold pressure and pressing time in the database, and α and β are both represented as protection values.

[0093] In this embodiment, the mold pressure and pressing time in the database are 100 MPa and 15 s respectively, and the protection values ​​α and β are 0.1 and 0.2 respectively. Therefore, the newly set mold pressure and pressing time are obtained by calculation, and the calculation results are: the mold pressure is 130 MPa, and the pressing time is 18 s.

[0094] The step of calculating the output includes,

[0095] Determine whether the number of information data in the query interval is greater than the calculated value.

[0096] When it is greater than, then type A calculation is performed;

[0097] When it is not greater than, perform Class B calculation.

[0098] The steps of the Class A calculation include:

[0099] Obtain the mold pressure and pressing time corresponding to all information data, and load the calculation formula to obtain the newly set mold pressure and pressing time to make the flattening mold operate. The calculation formula is:

[0100]

[0101] In the formula, n represents the number of information data.

[0102] The steps of the Class B calculation include:

[0103] Obtain the mold pressure and pressing time corresponding to all information data, and load the calculation formula to obtain the newly set mold pressure and pressing time to make the flattening mold operate. The calculation formula is:

[0104]

[0105] Where θ is the growth value.

[0106] The mold pressure and pressing time corresponding to different information data are obtained from the database, and then loaded into different calculation formulas to obtain new operating parameters to complete the flattening of the welding strip.

[0107] Outputting the operating parameters of the flattening die according to the judgment result and making the flattening die operate;

[0108] The operating parameters of the flattening die include die pressure and pressing time.

[0109] S3. Cool the flattened welding strip.

[0110] Rapid cooling can reduce the heat-affected zone of the welding strip, refine the grains, and improve the mechanical properties and corrosion resistance of the welding strip.

[0111] S4, straighten the cooled welding strip.

[0112] The straightness and flatness of the welding ribbon can be significantly improved, thereby improving its performance and reliability in subsequent applications. During the straightening process, the residual stress inside the welding ribbon will be partially released, thereby reducing cracks and other defects caused by stress concentration.

[0113] Example 2

[0114] Reference Figure 1 , which is a second embodiment of the present invention, provides a solder strip flattening process, comprising the following steps:

[0115] S1. Preheat the soldering tape.

[0116] When preheating the solder strip, the following methods can also be implemented:

[0117] When preheating the solder strip, the specific steps include:

[0118] adding the solder strip into the heating chamber, and then adding hydrogen gas into the heating chamber;

[0119] The heating chamber was heated at a rate of 17°C / min until the temperature reached 380°C and maintained for 7 minutes.

[0120] Then, nitrogen was injected into the heating chamber at a rate of 6500 L / H, and then the heating was continued to 470°C for 30 minutes.

[0121] Then air cool until the temperature of the solder strip reaches 170°C;

[0122] Exhaust the gas in the heating chamber.

[0123] S2. Send the preheated solder strip to a flattening mold for flattening.

[0124] The steps of flattening the preheated solder strip include:

[0125] Get the actual thickness of the current welding strip and the target thickness of the welding strip, and calculate the thickness that needs to be flattened;

[0126] When calculating the thickness that needs to be flattened, the calculation formula is:

[0127] e(t)=r(t)-y(t);

[0128] Where e(t) represents the error thickness, r(t) represents the target thickness, and y(t) represents the current thickness.

[0129] Set the phase difference threshold and make a primary judgment;

[0130] The steps of the primary judgment are specifically as follows:

[0131] Set the phase difference threshold to X and the query interval to [e(t)-X,e(t)+X];

[0132] Query the database to determine whether the information data in the query interval exists in the database. If it exists, calculate and output it; if it does not exist, predict and output it.

[0133] The steps for predicting output are:

[0134] Obtaining information data closest to the error thickness, and obtaining the flat pressing die operation parameters corresponding to the information data;

[0135] Calculate the ratio of the information data to the error thickness, and determine whether the ratio is greater than a preset value;

[0136] If it is greater than the preset value, the mold pressure and the pressing time are adjusted synchronously, and then it is re-determined whether the new error thickness is within the query range, and this step is repeated until the new error thickness is within the query range;

[0137] If it is not greater than the preset value, the mold pressure and the pressing time are adjusted, and then the new error thickness is re-determined to see if it is within the query range. This step is repeated until the new error thickness is within the query range.

[0138] The calculation formula of the ratio value is:

[0139]

[0140] Wherein, B represents the ratio value and w(i) represents the information data.

[0141] Methods for adjusting mold pressure and pressing time synchronously or selectively include:

[0142]

[0143] Where, L new and T new They represent the newly set mold pressure and pressing time, L old and T old They are respectively represented by the mold pressure and pressing time in the database, and α and β are both represented as protection values.

[0144] The step of calculating the output includes,

[0145] Determine whether the number of information data in the query interval is greater than the calculated value.

[0146] When it is greater than, then type A calculation is performed;

[0147] When it is not greater than, perform Class B calculation.

[0148] The steps of the Class A calculation include:

[0149] Obtain the mold pressure and pressing time corresponding to all information data, and load the calculation formula to obtain the newly set mold pressure and pressing time to make the flattening mold operate. The calculation formula is:

[0150]

[0151] In the formula, n represents the number of information data.

[0152] The steps of the Class B calculation include:

[0153] Obtain the mold pressure and pressing time corresponding to all information data, and load the calculation formula to obtain the newly set mold pressure and pressing time to make the flattening mold operate. The calculation formula is:

[0154]

[0155] Where θ is the growth value.

[0156] The mold pressure and pressing time corresponding to different information data are obtained from the database, and then loaded into different calculation formulas to obtain new operating parameters to complete the flattening of the welding strip.

[0157] Outputting the operating parameters of the flattening die according to the judgment result and making the flattening die operate;

[0158] The operating parameters of the flattening die include die pressure and pressing time.

[0159] S3. Cool the flattened welding strip.

[0160] Rapid cooling can reduce the heat-affected zone of the welding strip, refine the grains, and improve the mechanical properties and corrosion resistance of the welding strip.

[0161] S4, straighten the cooled welding strip.

[0162] The straightness and flatness of the solder strip can be significantly improved, thereby improving its performance and reliability in subsequent applications. During the straightening process, the residual stress inside the solder strip will be partially released, thereby reducing cracks and other defects caused by stress concentration.

[0163] Example 3

[0164] Reference Figure 1 , which is the third embodiment of the present invention, provides a solder strip flattening process, comprising the following steps:

[0165] S1. Preheat the soldering tape.

[0166] When preheating the solder strip, the following methods can also be implemented:

[0167] When preheating the solder strip, the specific steps include:

[0168] adding the solder strip into the heating chamber, and then adding hydrogen gas into the heating chamber;

[0169] The heating chamber is heated at a rate of 20°C / min until the temperature reaches 400°C and maintained for 10 minutes;

[0170] Then, nitrogen was injected into the heating chamber at a rate of 7000 L / H, and then the heating was continued to 480°C for 30 minutes.

[0171] Then air cool until the temperature of the solder strip reaches 200°C;

[0172] Exhaust the gas in the heating chamber.

[0173] S2. Send the preheated solder strip to a flattening mold for flattening.

[0174] The steps of flattening the preheated solder strip include:

[0175] Get the actual thickness of the current welding strip and the target thickness of the welding strip, and calculate the thickness that needs to be flattened;

[0176] When calculating the thickness that needs to be flattened, the calculation formula is:

[0177] e(t)=r(t)-y(t);

[0178] Where e(t) represents the error thickness, r(t) represents the target thickness, and y(t) represents the current thickness.

[0179] Set the phase difference threshold and make a primary judgment;

[0180] The steps of the primary judgment are specifically as follows:

[0181] Set the phase difference threshold to X and the query interval to [e(t)-X,e(t)+X];

[0182] Query the database to determine whether the information data in the query interval exists in the database. If it exists, calculate and output it; if it does not exist, predict and output it.

[0183] The steps for predicting output are:

[0184] Obtaining information data closest to the error thickness, and obtaining the flat pressing die operation parameters corresponding to the information data;

[0185] Calculate the ratio of the information data to the error thickness, and determine whether the ratio is greater than a preset value;

[0186] If it is greater than the preset value, the mold pressure and the pressing time are adjusted synchronously, and then it is re-determined whether the new error thickness is within the query range, and this step is repeated until the new error thickness is within the query range;

[0187] If it is not greater than the preset value, the mold pressure and the pressing time are adjusted, and then the new error thickness is re-determined to see if it is within the query range. This step is repeated until the new error thickness is within the query range.

[0188] The calculation formula of the ratio value is:

[0189]

[0190] Wherein, B represents the ratio value and w(i) represents the information data.

[0191] Methods for adjusting mold pressure and pressing time synchronously or selectively include:

[0192]

[0193] Where, L new and T new They represent the newly set mold pressure and pressing time, L old and T old They are respectively represented by the mold pressure and pressing time in the database, and α and β are both represented as protection values.

[0194] The step of calculating the output includes,

[0195] Determine whether the number of information data in the query interval is greater than the calculated value.

[0196] When it is greater than, then type A calculation is performed;

[0197] When it is not greater than, perform Class B calculation.

[0198] The steps of the Class A calculation include:

[0199] Obtain the mold pressure and pressing time corresponding to all information data, and load the calculation formula to obtain the newly set mold pressure and pressing time to make the flattening mold operate. The calculation formula is:

[0200]

[0201] In the formula, n represents the number of information data.

[0202] The steps of the Class B calculation include:

[0203] Obtain the mold pressure and pressing time corresponding to all information data, and load the calculation formula to obtain the newly set mold pressure and pressing time to make the flattening mold operate. The calculation formula is:

[0204]

[0205] Where θ is the growth value.

[0206] The mold pressure and pressing time corresponding to different information data are obtained from the database, and then loaded into different calculation formulas to obtain new operating parameters to complete the flattening of the welding strip.

[0207] Outputting the operating parameters of the flattening die according to the judgment result and making the flattening die operate;

[0208] The operating parameters of the flattening die include die pressure and pressing time.

[0209] In summary: the database can be obtained and the flattened thickness can be calculated. At the same time, a variety of judgment methods can be applied to different welding strip situations, thereby ensuring that the obtained operating parameters are more accurate. Compared with the previous adjustment of operating parameters through manual experience, this method can greatly reduce the loss of welding strips, and the fully automatic algorithm can adapt to large-scale processing.

[0210] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A welding strip flattening process, characterized in that: The following steps are included: Preheating the solder strip; The preheated solder strip is sent to a flattening die for flattening; Cooling the flattened welding strip; The cooled solder strip is straightened.

2. The solder strip flattening process according to claim 1, characterized in that: When preheating the solder strip, the specific steps include: adding the solder strip into the heating chamber, and then adding hydrogen gas into the heating chamber; The heating chamber is heated at a rate of 15-20°C / min until the temperature reaches 360-400°C and maintained for 5-10 minutes; Then, nitrogen is injected into the heating chamber at a rate of 6000-7000 L / H, and then the chamber is heated to 450-480°C for 30 minutes. Then air cool until the temperature of the solder strip reaches 150-200°C; Exhaust the gas in the heating chamber.

3. The solder strip flattening process according to claim 2, characterized in that: The steps of flattening the preheated solder strip include: Get the actual thickness of the current welding strip and the target thickness of the welding strip, and calculate the thickness that needs to be flattened; Set the phase difference threshold and make a primary judgment; Outputting the operating parameters of the flattening die according to the judgment result and making the flattening die operate; The operating parameters of the flattening die include die pressure and pressing time.

4. The solder strip flattening process according to claim 3, characterized in that: When calculating the thickness that needs to be flattened, the calculation formula is: e(t)=r(t)-y(t); Where e(t) represents the error thickness, r(t) represents the target thickness, and y(t) represents the current thickness.

5. The solder strip flattening process according to claim 4, characterized in that: The steps of the primary judgment are specifically as follows: Set the phase difference threshold to X and the query interval to [e(t)-X,e(t)+X]; Query the database to determine whether the information data in the query interval exists in the database. If it exists, calculate and output it; if it does not exist, predict and output it.

6. The solder strip flattening process according to claim 5, characterized in that: The operation steps of the prediction output are: Obtaining information data closest to the error thickness, and obtaining the flattening die operation parameters corresponding to the information data; Calculate the ratio of the information data to the error thickness, and determine whether the ratio is greater than a preset value; If it is greater than the preset value, the mold pressure and the pressing time are adjusted synchronously, and then it is re-determined whether the new error thickness is within the query range, and this step is repeated until the new error thickness is within the query range; If it is not greater than the preset value, the mold pressure and the pressing time are adjusted, and then the new error thickness is re-determined to see if it is within the query range. This step is repeated until the new error thickness is within the query range. The calculation formula of the ratio value is: Wherein, B represents the ratio value and w(i) represents the information data.

7. The solder strip flattening process according to claim 6, characterized in that: Methods for adjusting mold pressure and pressing time synchronously or selectively include: Where, L new and T new They represent the newly set mold pressure and pressing time, L old and T old They are respectively represented by the mold pressure and pressing time in the database, and α and β are both represented as protection values.

8. The solder strip flattening process according to claim 7, characterized in that: The step of calculating the output includes, Determine whether the number of information data in the query interval is greater than the calculated value. When it is greater than, then type A calculation is performed; When it is not greater than, perform Class B calculation.

9. The solder strip flattening process according to claim 8, characterized in that: The steps of the Class A calculation include: Obtain the mold pressure and pressing time corresponding to all information data, and load the calculation formula to obtain the newly set mold pressure and pressing time to make the flattening mold operate. The calculation formula is: In the formula, n represents the number of information data.

10. The solder strip flattening process according to claim 9, characterized in that: The steps of the Class B calculation include: Obtain the mold pressure and pressing time corresponding to all information data, and load the calculation formula to obtain the newly set mold pressure and pressing time to make the flattening mold operate. The calculation formula is: Where θ is the growth value.

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